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Professional Paper 1650–G

Atlas of Relations Between Climatic Parameters and Distributions of Important Trees and Shrubs in North America—Revisions for all Taxa from the United States and Canada and New Taxa from the Western United States

Table 1. Species included in this volume. A blue background indicates a new species, a red background indicates a species whose distribution has been remapped (compared to earlier volumes of this atlas), and a pink background indicates a species that represents the merger of two former species; all other species have been redigitized using updated technology but retain the original reference from the previous atlases. Click on a column name to sort.


Scientific name from original reference Currently accepted scientific name Authors for currently accepted scientific name Common name(s) Plant family Number of gridpoints Original primary map, name and authority source Unique sources Notes Status
Abies amabilisAbies amabilisDouglas ex J. ForbesPacific silver firPinaceae262Little (1971); Viereck and Little (1975)  redigitized
Abies balsameaAbies balsamea(L.) Mill.balsam firPinaceae4944Little (1971)  redigitized
Abies concolorAbies concolor(Gordon & Glend.) Lindl. ex Hildebr.white firPinaceae261Little (1971)  redigitized
Abies fraseriAbies fraseri(Pursh) Poir.Fraser firPinaceae3Little (1971)  redigitized
Abies grandisAbies grandis(Douglas ex D. Don) Lindl. grand firPinaceae345Little (1971)  redigitized
Abies lasiocarpaAbies lasiocarpa(Hook.) Nutt. subalpine firPinaceae1851Little (1971); Viereck and Little (1975)  redigitized
Abies magnificaAbies magnificaA. Murray bisCalifornia red firPinaceae45Little (1971)  redigitized
Abies proceraAbies proceraRehdernoble firPinaceae48Little (1971)  redigitized
Acacia berlandieriSenegalia berlandieri(Benth.) Britton & RoseBerlandier acaciaFabaceae139Little (1976)  redigitized
Acacia constricta var. constrictaVachellia constricta(Benth.) Seigler & Ebingerwhite thornFabaceae302Benson and Darrow (1981)Clarke and others (1990); Reed (1964)Based on Reed (1964), we excluded populations shown in some sources (e.g. USDA NRCS PLANTS and BONAP) for Maryland and Virginianew
Acacia farnesianaVachellia farnesiana var. farnesiana sweet acaciaFabaceae106Little (1976)  redigitized
Acacia greggiiSenegalia greggii(A. Gray) Britton & Rosecatclaw acaciaFabaceae642Little (1976)  redigitized
Acacia rigidulaVachellia rigidula(Benth.) Seigler & Ebingerblackbrush acaciaFabaceae106Little (1976)  redigitized
Acacia roemerianaSenegalia roemeriana(Scheele) Britton & RoseRoemer acaciaFabaceae126Little (1976)  redigitized
Acacia tortuosaVachellia tortuosa(L.) Seigler & Ebingertwisted acaciaFabaceae121Little (1976)  redigitized
Acacia wrightiiSenegalia greggii(A. Gray) Britton & RoseWright acaciaFabaceae116Little (1976)  redigitized
Acer barbatumAcer floridanum(Chapm.) PaxFlorida mapleSapindaceae633Little (1977)  redigitized
Acer circinatumAcer circinatumPurshvine mapleSapindaceae345Little (1976)  redigitized
Acer glabrumAcer glabrumTorr.Rocky Mountain mapleSapindaceae1762Little (1976); Viereck and Little (1975)  redigitized
Acer grandidentatumAcer grandidentatumNutt.bigtooth mapleSapindaceae116Little (1976)  redigitized
Acer leucodermeAcer leucodermeSmallchalk mapleSapindaceae189Little (1977)  redigitized
Acer macrophyllumAcer macrophyllumPurshbigleaf mapleSapindaceae432Little (1971)  redigitized
Acer negundoAcer negundoL.boxelderSapindaceae6399Little (1971)  redigitized
Acer nigrumAcer nigrumF. Michx.black mapleSapindaceae1474Little (1971)  redigitized
Acer pensylvanicumAcer pensylvanicumL.striped mapleSapindaceae1117Little (1977)  redigitized
Acer rubrumAcer rubrumL.red mapleSapindaceae4828Little (1971)  redigitized
Acer saccharinumAcer saccharinumL.silver mapleSapindaceae3728Little (1971)  redigitized
Acer saccharumAcer saccharumMarshallsugar mapleSapindaceae3404Little (1971)  redigitized
Acer spicatumAcer spicatumLam.mountain mapleSapindaceae3100Little (1977)  redigitized
Aesculus californicaAesculus californica(Spach) Nutt.California buckeyeSapindaceae101Little (1976)  redigitized
Aesculus glabraAesculus glabraWilld.Ohio buckeyeSapindaceae1400Little (1971)  redigitized
Aesculus octandraAesculus flavaSol.yellow buckeyeSapindaceae380Little (1971)  redigitized
Aesculus parvifloraAesculus parvifloraWalterbottlebrush buckeyeSapindaceae99Little (1977)  redigitized
Aesculus paviaAesculus paviaL.red buckeyeSapindaceae1102Little (1977)  redigitized
Aesculus sylvaticaAesculus sylvaticaW. Bartrampainted buckeyeSapindaceae174Little (1977)  redigitized
Agave desertiAgave desertiEngelm.desert agaveAsparagaceae98Benson and Darrow (1981)Gentry (1982) new
Agave lecheguillaAgave lecheguillaTorr.lecheguillaAsparagaceae156Benson and Darrow (1981)Gentry (1982) new
Agave neomexicanaAgave parryi subsp. neomexicana(Wooton & Standl.) B. UllrichNew Mexico agaveAsparagaceae63Gentry (1982)Gentry (1982) new
Agave utahensisAgave utahensisEngelm.Utah agaveAsparagaceae22Benson and Darrow (1981); Calflora (2013)Gentry (1982) remapped
Allionia incarnataAllionia incarnataL.allioniaNyctaginaceae1340eFloras (2013)Gentry (1982) new
Alnus maritimaAlnus maritimaMuhl. ex Nutt.seaside alderBetulaceae4Little (1977)  redigitized
Alnus oblongifoliaAlnus oblongifoliaTorr.Arizona alderBetulaceae42Little (1976)  redigitized
Alnus rhombifoliaAlnus rhombifoliaNutt.white alderBetulaceae210Little (1976)  redigitized
Alnus rubraAlnus rubraBong.red alderBetulaceae441Little (1971); Viereck and Little (1975)  redigitized
Alnus rugosaAlnus incana subsp. rugosa(Du Roi) R.T. Clausenspeckled alderBetulaceae8331Little (1977)  redigitized
Alnus serrulataAlnus serrulata(Aiton) Willd.hazel alderBetulaceae2133Little (1977)  redigitized
Alnus sinuataAlnus viridis subsp. sinuata(Regel) Á. Löve & D. LöveSitka alderBetulaceae1646Little (1976); Viereck and Little (1975)  redigitized
Alnus tenuifoliaAlnus incana subsp. tenuifolia(Nutt.) Breitung thinleaf alderBetulaceae3861Little (1976); Viereck and Little (1975)  redigitized
Ambrosia ambrosioidesAmbrosia ambrosioides(Cav.) W.W. Paynecanyon ragweedAsteraceae128Benson and Darrow (1981)  new
Ambrosia deltoideaAmbrosia deltoidea(Torr.) W.W. Paynebur sageAsteraceae100Benson and Darrow (1981)  new
Ambrosia dumosaAmbrosia dumosa(A. Gray) W.W. Paynewhite bur sageAsteraceae263Benson and Darrow (1981)Raven and others (1968) new
Amelanchier alnifoliaAmelanchier alnifolia(Nutt.) Nutt. ex M. Roem.western serviceberryRosaceae5606Little (1976); Viereck and Little (1975)  redigitized
Amelanchier arboreaAmelanchier arborea(F. Michx.) Fernalddowny serviceberryRosaceae4140Little (1977)  redigitized
Amelanchier interiorAmelanchier interiorE.L. Nielseninland serviceberryRosaceae76Little (1977)  redigitized
Amelanchier sanguineaAmelanchier sanguinea(Pursh) DC.roundleaf serviceberryRosaceae541Little (1977)  redigitized
Amelanchier utahensisAmelanchier utahensisKoehneUtah serviceberryRosaceae338Little (1976)  redigitized
Amsonia tomentosa var. stenophyllaAmsonia tomentosa var. stenophyllaKearney & Peebleswoolly bluestarApocynaceae108McLaughlin (1982)McLaughlin (1982) new
Annona glabraAnnona glabraL.pond-appleAnnonaceae51Little (1978)  redigitized
Aralia spinosaAralia spinosaL.devils-walkingstickAraliaceae1853Little (1977)  redigitized
Arbutus arizonicaArbutus arizonica(A. Gray) Sarg.Arizona madroneEricaceae6Little (1976)  redigitized
Arbutus menziesiiArbutus menziesiiPurshPacific madroneEricaceae227Little (1971)  redigitized
Arbutus texanaArbutus xalapensisKunthTexas madroneEricaceae15Little (1976)  redigitized
Arctostaphylos pringleiArctostaphylos pringleiParryPringle manzanitaEricaceae7Little (1976)  redigitized
Ardisia escallonioidesArdisia escallonioidesSchltdl. & Cham.marlberryPrimulaceae49Little (1978)  redigitized
Artemisia arbusculaArtemisia arbusculaNutt. little sagebrush, low sagebrush, alkali sagebrushAsteraceae82Beetle (1960)Beetle (1960)In accordance with eFloras, this is comprised of the three taxa mapped in Beetle (1960) (that were labeled Artemisia arbuscula subsp. arbuscula, Artemisia arbuscula subsp. thermopola, and Artemisia longiloba)new
Artemisia bigeloviiArtemisia bigeloviiA. Grayflat sagebrush, bigelow sagebrushAsteraceae85Beetle (1960)Beetle (1960) new
Artemisia canaArtemisia canaPurshsilver sagebrushAsteraceae181Beetle (1960)Beetle (1960) new
Artemisia novaArtemisia novaA. Nelsonblack sagebrushAsteraceae122Beetle (1960)Beetle (1960) new
Artemisia rigidaArtemisia rigida(Nutt.) A. Graystiff sagebrushAsteraceae24Beetle (1960)Beetle (1960) new
Artemisia tridentataArtemisia tridentataNutt.big sagebrushAsteraceae1895Little (1976); Beetle (1960)Beetle (1960)This geographic distribution was modified from that in Thompson and others (1999b) based on information from Little (1976), Beetle (1960), and other sources listed in Tables 3 and 4remapped
Artemisia tripartitaArtemisia tripartitaRydb.threetip sagebrushAsteraceae37Beetle (1960)Beetle (1960) new
Asimina trilobaAsimina triloba(L.) DunalpawpawAnnonaceae2371Little (1977)  redigitized
Atriplex canescensAtriplex canescens(Pursh) Nutt.four-wing saltbushAmaranthaceae4081eFloras (2013)Sanderson and MacArthur (2004)We followed the The Oregon Flora Project and omitted Atriplex canescens from northern Oregon, where it was mapped as present by Sanderson and McArthur (2004)new
Atriplex confertifoliaAtriplex confertifolia(Torr. & Frém.) S. WatsonshadscaleAmaranthaceae1842eFloras (2013)  new
Atriplex hymenelytraAtriplex hymenelytra(Torr.) S. Watsondesert hollyAmaranthaceae194Benson and Darrow (1981)  new
Atriplex parryiAtriplex parryiS. WatsonParry saltbushAmaranthaceae40Benson and Darrow (1981)  new
Atriplex polycarpaAtriplex polycarpa(Torr.) S. Watsondesert saltbushAmaranthaceae378Benson and Darrow (1981)  new
Avicennia germinansAvicennia germinans(L.) L.black-mangroveAcanthaceae16Little (1977, 1978)  redigitized
Baccharis halimifoliaBaccharis halimifoliaL.eastern baccharisAsteraceae1170Little (1977)  redigitized
Bahiopsis reticulataBahiopsis reticulata(S. Watson) E.E. Schill. & Paneronetvein goldeneyeAsteraceae31Calflora (2013); SEINet (2013)  new
Bebbia junceaBebbia juncea(Benth.) GreenebebbiaAsteraceae321Benson and Darrow (1981)  new
Berberis fremontiiBerberis fremontiiTorr.Fremont barberryBerberidaceae285Benson and Darrow (1981)  new
Berberis haematocarpaBerberis haematocarpaWootonred barberry, algeritaBerberidaceae224Benson and Darrow (1981)  new
Berberis trifoliolataBerberis trifoliolataMoricagritosBerberidaceae599Benson and Darrow (1981)  new
Betula alleghaniensisBetula alleghaniensisBrittonyellow birchBetulaceae2270Little (1971)  redigitized
Betula lentaBetula lentaL.sweet birchBetulaceae757Little (1971)  redigitized
Betula nanaBetula nanaL.dwarf arctic birchBetulaceae6432Abstracted from Hultén (1968); Viereck and Little (1975)  redigitized
Betula nigraBetula nigraL.river birchBetulaceae2132Little (1971)  redigitized
Betula occidentalisBetula occidentalisHook.water birchBetulaceae1091Little (1976)  redigitized
Betula papyriferaBetula papyriferaMarshallpaper birchBetulaceae10090Little (1971); Viereck and Little (1975)  redigitized
Betula populifoliaBetula populifoliaMarshallgray birchBetulaceae639Little (1971)  redigitized
Brickellia atractyloidesBrickellia atractyloidesA. Grayhollyleaf brickellbushAsteraceae257Benson and Darrow (1981)  new
Brickellia coulteriBrickellia coulteriA. GrayCoulter's brickellbushAsteraceae131Benson and Darrow (1981)  new
Brickellia incanaBrickellia incanaA. Graywhite brickellbushAsteraceae81Benson and Darrow (1981)  new
Brickellia laciniataBrickellia laciniataA. Graysplitleaf brickellbushAsteraceae234Benson and Darrow (1981)  new
Brickellia venosaBrickellia venosa(Wooton and Standl.) B.L. Rob.veiny brickellbushAsteraceae35Benson and Darrow (1981)  new
Buddleja utahensisBuddleja utahensisCovillePanamint butterflybushScrophulariaceae51Benson and Darrow (1981)  new
Bumelia celastrinaSideroxylon celastrinum(Kunth) T.D. Penn.saffron-plumSapotaceae69Little (1976, 1978)  redigitized
Bumelia lanuginosaSideroxylon lanuginosumMichx.gum bumeliaSapotaceae1603Little (1976, 1977)  redigitized
Bumelia lycioidesSideroxylon lycioidesL.buckthorn bumeliaSapotaceae523Little (1977)  redigitized
Bumelia tenaxSideroxylon tenaxL.tough bumeliaSapotaceae50Little (1977)  redigitized
Bursera microphyllaBursera microphyllaA. GrayelephanttreeBurseraceae21Little (1976); Benson and Darrow (1981)  remapped
Bursera simarubaBursera simaruba(L.) Sarg.gumbo-limboBurseraceae24Little (1978)  redigitized
Caesalpinia mexicanaCaesalpinia mexicanaA. GrayMexican poincianaFabaceae5Little (1976)  redigitized
Calliandra eriophyllaCalliandra eriophyllaBenth.fairy dusterFabaceae218Benson and Darrow (1981)  new
Canotia holacanthaCanotia holacanthaTorr.canotiaCelastraceae64Little (1976)  redigitized
Carnegiea giganteaCarnegiea gigantea(Engelm.) Britton & RosesaguaroCactaceae64Turner and others (1995); SEINet (2013); Little (1976)  remapped
Carpinus carolinianaCarpinus carolinianaWalterAmerican hornbeamBetulaceae3758Little (1971)  redigitized
Carya aquaticaCarya aquatica(F. Michx.) Nutt.water hickoryJuglandaceae987Little (1971)  redigitized
Carya cordiformisCarya cordiformis(Wangenh.) K. Kochbitternut hickoryJuglandaceae3751Little (1971)  redigitized
Carya floridanaCarya floridanaSarg.scrub hickoryJuglandaceae43Little (1977)  redigitized
Carya glabraCarya glabra(Mill.) Sweet pignut hickoryJuglandaceae2905Little (1971)  redigitized
Carya illinoensisCarya illinoinensis(Wangenh.) K. KochpecanJuglandaceae1000Little (1971)  redigitized
Carya laciniosaCarya laciniosa(F. Michx.) Loudonshellbark hickoryJuglandaceae886Little (1971)  redigitized
Carya myristicaeformisCarya myristiciformis(F. Michx.) Nutt.nutmeg hickoryJuglandaceae48Little (1971)  redigitized
Carya ovataCarya ovata(Mill.) K. Koch shagbark hickoryJuglandaceae3023Little (1971)  redigitized
Carya pallidaCarya pallida(Ashe) Engl. & Graebn.sand hickoryJuglandaceae646Little (1977)  redigitized
Carya texanaCarya texanaBuckleyblack hickoryJuglandaceae649Little (1977)  redigitized
Carya tomentosaCarya tomentosa(Poir.) Nutt.mockernut hickoryJuglandaceae2839Little (1971)  redigitized
Castanea alnifoliaCastanea pumila(L.) Mill.Florida chinkapinFagaceae74Little (1977)  redigitized
Castanea dentataCastanea dentata(Marshall) Borkh.American chestnutFagaceae1158Little (1977)  redigitized
Castanea ozarkensisCastanea ozarkensisAsheOzark chinkapinFagaceae85Little (1977)  redigitized
Castanea pumilaCastanea pumila(L.) Mill. Allegheny chinkapinFagaceae1340Little (1977)  redigitized
Castanopsis chrysophyllaChrysolepis chrysophylla(Douglas ex Hook.) Hjelmq.golden chinkapinFagaceae119Little (1971)  redigitized
Ceanothus spinosusCeanothus spinosusNutt.spiny ceanothusRhamnaceae5Little (1976)  redigitized
Ceanothus thyrsiflorusCeanothus thyrsiflorusEschsch.blueblossomRhamnaceae45Little (1976)  redigitized
Celtis laevigataCeltis laevigataWilld.sugarberryCannabaceae2421Little (1971)  redigitized
Celtis occidentalisCeltis occidentalisL.hackberryCannabaceae3110Little (1971)  redigitized
Celtis pallidaCeltis pallidaTorr.desert hackberryCannabaceae234Turner and others (1995); Benson and Darrow (1981)  new
Celtis reticulataCeltis reticulataTorr.netleaf hackberryCannabaceae667Little (1976)  redigitized
Celtis tenuifoliaCeltis tenuifoliaNutt.Georgia hackberryCannabaceae648Little (1977)  redigitized
Cephalanthus occidentalisCephalanthus occidentalisL.common buttonbushRubiaceae4573Little (1976, 1977)  redigitized
Cercidium floridumParkinsonia florida(Benth. ex A. Gray) S. Watsonblue paloverdeFabaceae96Little (1976); Benson and Darrow (1981)  remapped
Cercidium macrumParkinsonia texana var. macra(I.M. Johnst.) Iselyborder paloverdeFabaceae40Little (1976)  redigitized
Cercidium microphyllumParkinsonia microphyllaTorr.yellow paloverdeFabaceae66Little (1976); Benson and Darrow (1981)  remapped
Cercis canadensisCercis canadensisL.eastern redbudFabaceae3029Little (1976, 1977)  redigitized
Cercis occidentalisCercis occidentalisTorr. ex A. GrayCalifornia redbudFabaceae78Little (1976)  redigitized
Cercocarpus betuloidesCercocarpus betuloidesNutt.birchleaf cercocarpusRosaceae109Little (1976)  redigitized
Cercocarpus breviflorusCercocarpus breviflorusA. Grayhairy cercocarpusRosaceae72Little (1976)  redigitized
Cercocarpus intricatusCercocarpus ledifolius var. intricatus (S. Watson) M.E. Joneslittleleaf mountain-mahoganyRosaceae499SEINet (2013)  new
Cercocarpus ledifoliusCercocarpus ledifolius var. ledifolius curlleaf cercocarpusRosaceae303Little (1976)  redigitized
Chamaebatiaria millefoliumChamaebatiaria millefolium(Torr.) Maxim. desert sweetRosaceae272SEINet (2013); Calflora (2013); Oregon Flora Project (2013); Schultz and others (2010, Digital Atlas of the Vascular Plants of Utah)  new
Chamaecyparis lawsonianaChamaecyparis lawsoniana(A. Murray) Parl.Port-Orford-cedarCupressaceae21Little (1971)  redigitized
Chamaecyparis nootkatensisCallitropsis nootkatensis(D. Don) FlorinAlaska-cedarCupressaceae310Little (1971); Viereck and Little (1975)  redigitized
Chamaecyparis thyoidesChamaecyparis thyoides(L.) Britton, Sterns & Poggenb. Atlantic white-cedarCupressaceae208Little (1971)  redigitized
Chilopsis linearisChilopsis linearis(Cav.) Sweetdesert-willowBignoniaceae536Little (1976)  redigitized
Chionanthus virginicusChionanthus virginicusL.fringetreeOleaceae1311Little (1977)  redigitized
Chrysobalanus icacoChrysobalanus icacoL.cocoplumChrysobalanaceae40Little (1978)  redigitized
Chrysophyllum oliviformeChrysophyllum oliviformeL.satinleafSapotaceae37Little (1978)  redigitized
Chrysothamnus albidusEricameria albida(M.E. Jones ex A. Gray) L.C. Andersonalkali rabbitbrushAsteraceae225Anderson (1986)Anderson (1986) new
Chrysothamnus depressusChrysothamnus depressusNutt.dwarf rabbitbrushAsteraceae638Anderson (1986)Anderson (1986) new
Chrysothamnus gramineusCuniculotinus gramineus(H.M. Hall) Urbatsch, R.P. Roberts & NeubigCharleston rabbitbrushAsteraceae7Anderson (1986)Anderson (1986) new
Chrysothamnus greeneiChrysothamnus greenei(A. Gray) GreeneGreene's rabbitbrushAsteraceae585Anderson (1986)Anderson (1986) new
Chrysothamnus humilisChrysothamnus humilisGreenelow rabbitbrushAsteraceae109Anderson (1986)Anderson (1986) new
Chrysothamnus linifoliusLorandersonia linifolia(Greene) Urbatsch, R.P. Roberts & Neubigspear-leaf rabbitbrushAsteraceae277Anderson (1986)Anderson (1986) new
Chrysothamnus molestusChrysothamnus molestus(S.F. Blake) L.C. AndersonArizona rabbitbrushAsteraceae2Anderson (1986)Anderson (1986) new
Chrysothamnus nauseosusEricameria nauseosa(Pall. ex Pursh) G.L. Nesom & G.I. Bairdgray rabbitbrushAsteraceae3355Anderson (1986)Anderson (1986)This is a composite map composed of all of the 22 subspecies of C. nauseosus mapped by Anderson (1986)new
Chrysothamnus paniculatusEricameria paniculata (A. Gray) Rydb.desert rabbitbrushAsteraceae168Anderson (1986)Anderson (1986) new
Chrysothamnus parryiEricameria parryi(A. Gray) G.L. Nesom & G.I. BairdParry's rabbitbrushAsteraceae611Anderson (1986)Anderson (1986)This is a composite map composed of all of the 12 subspecies of C. parryi mapped by Anderson (1986)new
Chrysothamnus pulchellus ssp. baileyiLorandersonia baileyi(Wooton & Standl.) Urbatsch, R.P. Roberts & NeubigBailey's rabbitbrushAsteraceae420Anderson (1986)Anderson (1986)The two subspecies of C. pulchellus mapped by Anderson (1986) were not combined to a single C. pulchellus map because C. pulchellus ssp. baileyi is now considered to be in a different genus (as Lorandersonia baileyi)new
Chrysothamnus pulchellus ssp. pulchellusLorandersonia pulchella(A. Gray) Urbatsch, R.P. Roberts & Neubigsouthwestern rabbitbrushAsteraceae5Anderson (1986)Anderson (1986)The two subspecies of C. pulchellus mapped by Anderson (1986) were not combined to a single C. pulchellus map because C. pulchellus ssp. baileyi is now considered to be in a different genus (as Lorandersonia baileyi)new
Chrysothamnus spathulatusLorandersonia spathulata(L.C. Anderson) Urbatsch, R.P. Roberts & NeubigGuadalupe rabbitbrushAsteraceae25Anderson (1986)Anderson (1986) new
Chrysothamnus teretifoliusEricameria teretifolia(Durand & Hilg.) Jeps.green rabbitbrushAsteraceae165Anderson (1986)Anderson (1986) new
Chrysothamnus vaseyiChrysothamnus vaseyi(A. Gray) GreeneVasey's rabbitbrushAsteraceae143Anderson (1986)Anderson (1986) new
Chrysothamnus viscidiflorusChrysothamnus viscidiflorus(Hook.) NuttDouglas rabbitbrushAsteraceae2098Anderson (1986)Anderson (1986)This is a composite map of the five subspecies of C. viscidiflorus mapped by Anderson (1986)new
Citharexylum berlandieriCitharexylum berlandieriB.L. Rob.Berlandier fiddlewoodVerbenaceae3Little (1976)  redigitized
Cladrastis kentukeaCladrastis kentukea(Dum. Cours.) RuddyellowwoodFabaceae74Little (1977)  redigitized
Clethra acuminataClethra acuminataMichx.cinnamon clethraClethraceae73Little (1977)  redigitized
Cliftonia monophyllaCliftonia monophylla(Lam.) Britton ex Sarg.buckwheat-treeCyrillaceae154Little (1977)  redigitized
Coccoloba diversifoliaCoccoloba diversifoliaJacq.pigeon-plumPolygonaceae9Little (1978)  redigitized
Coccoloba uviferaCoccoloba uvifera(L.) L.seagrapePolygonaceae4Little (1978)  redigitized
Coleogyne ramosissimaColeogyne ramosissimaTorr.blackbrushRosaceae241Benson and Darrow (1981)  new
Condalia ericoidesCondalia ericoides(A. Gray) M.C. Johnst.javelina bushRhamnaceae205Benson and Darrow (1981)  new
Condalia globosaCondalia globosaI.M. Johnst. bitter condaliaRhamnaceae9Little (1976)  redigitized
Condalia hookeriCondalia hookeriM.C. Johnst.bluewoodRhamnaceae183Little (1976)  redigitized
Condalia warnockiiCondalia warnockiiM.C. Johnst.Mexican crucilloRhamnaceae177Benson and Darrow (1981)  new
Conocarpus erectusConocarpus erectusL.button-mangroveCombretaceae7Little (1978)  redigitized
Cordia boissieriCordia boissieriA. DC.anacahuitaBoraginaceae13Little (1976)  redigitized
Cornus alternifoliaCornus alternifoliaL. f.alternate-leaf dogwoodCornaceae2525Little (1977)  redigitized
Cornus drummondiiCornus drummondiiC.A. Mey.roughleaf dogwoodCornaceae1664Little (1977)  redigitized
Cornus floridaCornus floridaL.flowering dogwoodCornaceae2910Little (1971)  redigitized
Cornus glabrataCornus glabrataBenth. brown dogwoodCornaceae58Little (1976)  redigitized
Cornus nuttalliiCornus nuttalliiAudubonPacific dogwoodCornaceae375Little (1976)  redigitized
Cornus occidentalisCornus sericea ssp. occidentalis(Torr. & Gray) Fosbergwestern dogwoodCornaceae238Little (1976)  redigitized
Cornus racemosaCornus racemosaLam.gray dogwoodCornaceae1612Little (1977)  redigitized
Cornus rugosaCornus rugosaLam.roundleaf dogwoodCornaceae1492Little (1977)  redigitized
Cornus sessilisCornus sessilisTorr. ex Durandblackfruit dogwoodCornaceae40Little (1976)  redigitized
Cornus stoloniferaCornus sericea ssp. sericea red-osier dogwoodCornaceae10075Little (1977); Viereck and Little (1975)  redigitized
Cornus strictaCornus foeminaP. Mill.stiffcornel dogwoodCornaceae1037Little (1977)  redigitized
Corylus cornutaCorylus cornutaMarshallbeaked hazelBetulaceae3700Little (1977)  redigitized
Cotinus obovatusCotinus obovatusRaf.American smoketreeAnacardiaceae43Little (1977)  redigitized
Cowania mexicanaPurshia mexicana(D. Don) S.L. WelshcliffroseRosaceae397Little (1976)  redigitized
Crataegus columbianaCrataegus chrysocarpa var. piperi / Crataegus williamsii(Britton) Kruschke / Eggl.Columbia hawthornRosaceae67Little (1976)  redigitized
Crataegus douglasiiCrataegus douglasii / Crataegus rivularisLindl. / Nutt.black hawthornRosaceae1343Little (1976)  redigitized
Crataegus erythropodaCrataegus erythropodaAsheCerro hawthornRosaceae24Little (1976)  redigitized
Crataegus salignaCrataegus salignaGreene willow hawthornRosaceae10Little (1976)  redigitized
Crataegus tracyiCrataegus tracyiAshe ex Eggl.Tracy hawthornRosaceae13Little (1976)  redigitized
Crossosoma bigeloviiCrossosoma bigeloviiS. Watsonragged rockflowerCrossosomataceae206Benson and Darrow (1981)  new
Cupressus arizonicaHesperocyparis arizonica / Hesperocyparis glabra / Hesperocyparis stephensonii(Greene) Bartel / (Sudw.) Bartel / (C.B. Wolf) Bartel Arizona cypressCupressaceae5Little (1971)  redigitized
Cupressus macnabianaHesperocyparis macnabiana(A. Murray bis) Bartel MacNab cypressCupressaceae4Little (1971)  redigitized
Cupressus sargentiiHesperocyparis sargentii(Jeps.) Bartel Sargent cypressCupressaceae5Little (1971)  redigitized
Cylindropuntia acanthocarpaCylindropuntia acanthocarpa(Engelm. & J.M. Bigelow) F.M. Knuthbuckhorn chollaCactaceae253eFloras (2013); SEINet (2013); Benson (1982)Benson (1969, 1982); Pinkava (1999)We follow eFloras and Tropicos in recognizing Cylindropuntia as a valid genus (ITIS follows eariler usage and places it within the genus Opuntia)new
Cylindropuntia bigeloviiCylindropuntia bigelovii(Engelm.) F.M. Knuthteddy-bear chollaCactaceae143eFloras (2013); Benson (1982); Turner and others (1995)Benson (1969, 1982); Pinkava (1999)We follow eFloras and Tropicos in recognizing Cylindropuntia as a valid genus (ITIS follows eariler usage and places it within the genus Opuntia)new
Cylindropuntia echinocarpaCylindropuntia echinocarpa(Engelm. & J.M. Bigelow) F.M. Knuthsilver or golden chollaCactaceae144eFloras (2013); Benson (1982); Calflora (2013); SEINet (2013)Benson (1969, 1982); Pinkava (1999)We follow eFloras and Tropicos in recognizing Cylindropuntia as a valid genus (ITIS follows eariler usage and places it within the genus Opuntia)new
Cylindropuntia fulgidaCylindropuntia fulgida(Engelm.) F.M. Knuthjumping chollaCactaceae59Little (1976); eFloras (2013, name change only) The distribution of this taxon is unchanged from earlier volumes, but the genus name was changed to align with other related species included in this volume. We follow eFloras and Tropicos in recognizing Cylindropuntia as a valid genus (ITIS follows eariler usage and places it within the genus Opuntia)redigitized
Cylindropuntia ganderiCylindropuntia ganderi(C.B. Wolf) Rebman & PinkavaGander's buckhorn chollaCactaceae6Calflora (2013)Benson (1969, 1982); Pinkava (1999)We follow eFloras and Tropicos in recognizing Cylindropuntia as a valid genus (ITIS follows eariler usage and places it within the genus Opuntia)new
Cylindropuntia imbricataCylindropuntia imbricata(Haw.) F.M. Knuthtree chollaCactaceae731eFloras (2013); Benson (1982)Benson (1969, 1982); Pinkava (1999)We follow eFloras and Tropicos in recognizing Cylindropuntia as a valid genus (ITIS follows eariler usage and places it within the genus Opuntia)new
Cylindropuntia whippleiCylindropuntia whipplei(Engelm. & J.M. Bigelow) F.M. KnuthWhipple chollaCactaceae317eFloras (2013); Benson (1982)Benson (1969, 1982); Pinkava (1999)We follow eFloras and Tropicos in recognizing Cylindropuntia as a valid genus (ITIS follows eariler usage and places it within the genus Opuntia)new
Cyphomeris gypsophiloidesCyphomeris gypsophiloides(M. Martens & Galeotti) Standl.red cyphomerisNyctaginaceae211eFloras (2013)  new
Cyrilla racemifloraCyrilla racemifloraL.swamp cyrillaCyrillaceae554Little (1977)  redigitized
Dalea mollisDalea mollisBenth.hairy prairie cloverFabaceae170SEINet (2013); Calflora (2013)  new
Dalea spinosaPsorothamnus spinosus(A. Gray) BarnebysmokethornFabaceae101Little (1976)  redigitized
Dasylirion leiophyllumDasylirion leiophyllumEngelm. ex Trel.green sotolAsparagaceae55Benson and Darrow (1981)  new
Dasylirion wheeleriDasylirion wheeleriS. Watson ex Rothr.sotolAsparagaceae122Benson and Darrow (1981)  new
Diospyros texanaDiospyros texanaScheeleTexas persimmonEbenaceae301Little (1976)  redigitized
Diospyros virginianaDiospyros virginianaL.common persimmonEbenaceae2870Little (1971)  redigitized
Ditaxis lanceolataDitaxis lanceolata(Benth.) Pax & K. Hoffm.narrowleaf silverbushEuphorbiaceae131SEINet (2013)  new
Dithyrea californicaDithyrea californicaHarv.California shieldpodBrassicaceae165SEINet (2013); Calflora (2013)  new
Dodonaea viscosaDodonaea viscosaJacq. hopbushSapindaceae27Little (1976, 1978)  redigitized
Echinocactus polycephalusEchinocactus polycephalusEngelm. & J.M. Bigelowcottontop cactusCactaceae139Benson (1982)Benson (1969, 1982) new
Ehretia anacuaEhretia anacua(Terán & Berland.) I.M. Johnst.anaquaBoraginaceae49Little (1976)  redigitized
Elliottia racemosaElliottia racemosaMuhl. ex ElliottelliottiaEricaceae3Little (1977)  redigitized
Encelia farinosaEncelia farinosaA. Gray ex Torr.brittle bushAsteraceae324Benson and Darrow (1981)  new
Encelia frutescensEncelia frutescens(A. Gray) A. Graygreen brittle bushAsteraceae425Benson and Darrow (1981) We treated Encelia frutescens in the sense used by Benson and Darrow (1981), which includes taxa today considered as separate species: E. frutescens, E. actonii, E. virginensis, and E. resiniferanew
Ephedra nevadensis var. asperaEphedra asperaEngelm. ex S. Watsonboundary ephedraEphedraceae492Benson and Darrow (1981)  new
Ephedra nevadensis var. nevadensisEphedra nevadensisS. WatsonNevada jointfirEphedraceae559Benson and Darrow (1981)  new
Ephedra torreyanaEphedra torreyanaS. WatsonTorrey ephedraEphedraceae685Benson and Darrow (1981)  new
Ephedra trifurcaEphedra trifurcaTorr. ex S. WatsonMexican teaEphedraceae385Benson and Darrow (1981)  new
Ephedra viridisEphedra viridisCovillegreen ephedraEphedraceae915Benson and Darrow (1981)  new
Eriogonum fasciculatumEriogonum fasciculatumBenth.Eastern Mojave buckwheatPolygonaceae432Benson and Darrow (1981)  new
Erythrina flabelliformisErythrina flabelliformisKearneysouthwestern coralbeanFabaceae11Little (1976)  redigitized
Erythrina herbaceaErythrina herbaceaL.eastern coralbeanFabaceae422Little (1977)  redigitized
Eucnide urensEucnide urens(Parry ex Gray) Parrydesert rocknettleLoasaceae84SEINet (2013); Calflora (2013)  new
Eugenia axillarisEugenia axillaris(Sw.) Willd. white stopperMyrtaceae43Little (1978)  redigitized
Eugenia foetidaEugenia foetidaPers.boxleaf stopperMyrtaceae24Little (1978)  redigitized
Euonymus atropurpureusEuonymus atropurpureusJacq.eastern wahooCelastraceae1617Little (1977)  redigitized
Euonymus occidentalisEuonymus occidentalisNutt. ex Torr.western wahooCelastraceae90Little (1976)  redigitized
Eysenhardtia polystachyaEysenhardtia polystachya(Ortega) Sarg.kidneywoodFabaceae11Little (1976)  redigitized
Eysenhardtia texanaEysenhardtia texanaScheeleTexas kidneywoodFabaceae229Little (1976)  redigitized
Fagus grandifoliaFagus grandifoliaEhrh.American beechFagaceae3364Little (1971)  redigitized
Fallugia paradoxaFallugia paradoxa(D. Don) Endl. ex Torr.Apache plumeRosaceae891Benson and Darrow (1981)  new
Ferocactus covilleiFerocactus emoryi(Engelm.) OrcuttEmory barrel cactusCactaceae37Benson (1982)Benson (1969, 1982) new
Ferocactus cylindraceusFerocactus cylindraceus(Engelm.) OrcuttCalifornia barrel cactusCactaceae241Turner and others (1995); Benson (1982)Benson (1969, 1982); Clover and Jotter (1941)Clover and Jotter (1941) was consulted for the distribution within the Grand Canyonnew
Ferocactus wislizeniFerocactus wislizeni(Engelm.) Britton & J.N. Rosecandy barrel cactusCactaceae164Benson (1982)Benson (1969, 1982) new
Ficus aureaFicus aureaNutt.Florida strangler figMoraceae60Little (1978)  redigitized
Flourensia cernuaFlourensia cernuaDC.tar bushAsteraceae250Benson and Darrow (1981)  new
Forestiera acuminataForestiera acuminata(Michx.) Poir.swamp-privetOleaceae576Little (1977)  redigitized
Forestiera angustifoliaForestiera angustifoliaTorr.Texas forestieraOleaceae174Little (1976)  redigitized
Forestiera phillyreoidesForestiera shreveiStandl.desert-olive forestieraOleaceae5Little (1976)  redigitized
Forestiera segregataForestiera segregata(Jacq.) Krug & Urb.Florida-privetOleaceae47Little (1977)  redigitized
Fouquieria splendensFouquieria splendensEngelm.ocotilloFouquieriaceae534Benson and Darrow (1981)  new
Fraxinus americanaFraxinus americanaL.white ashOleaceae4264Little (1971)  redigitized
Fraxinus anomalaFraxinus anomalaTorr. ex S. Watsonsingleleaf ashOleaceae259Little (1976); Benson and Darrow (1981); SEINet (2013)  remapped
Fraxinus berlandierianaFraxinus berlandierianaA. DC.Berlandier ashOleaceae104Little (1976)  redigitized
Fraxinus carolinianaFraxinus carolinianaMill.Carolina ashOleaceae661Little (1977)  redigitized
Fraxinus cuspidataFraxinus cuspidataTorr.fragrant ashOleaceae7Little (1976)  redigitized
Fraxinus dipetalaFraxinus dipetalaHook. & Arn.two-petal ashOleaceae65Little (1976)  redigitized
Fraxinus greggiiFraxinus greggiiA. GrayGregg ashOleaceae14Little (1976)  redigitized
Fraxinus latifoliaFraxinus latifoliaBenth.Oregon ashOleaceae227Little (1971)  redigitized
Fraxinus nigraFraxinus nigraMarshallblack ashOleaceae2923Little (1971)  redigitized
Fraxinus pennsylvanicaFraxinus pennsylvanicaMarshallgreen ashOleaceae7310Little (1971)  redigitized
Fraxinus profundaFraxinus profunda(Bush) Bushpumpkin ashOleaceae246Little (1977)  redigitized
Fraxinus quadrangulataFraxinus quadrangulataMichx.blue ashOleaceae516Little (1971)  redigitized
Fraxinus texensisFraxinus texensis(A. Gray) Sarg.Texas ashOleaceae38Little (1976)  redigitized
Fraxinus velutinaFraxinus velutinaTorr.velvet ashOleaceae119Little (1976)  redigitized
Fremontodendron californicumFremontodendron californicum(Torr.) CovilleCalifornia fremontiaMalvaceae58Little (1976)  redigitized
Garrya ellipticaGarrya ellipticaDouglas ex Lindl.wavyleaf silktasselGarryaceae53Little (1976)  redigitized
Gleditsia aquaticaGleditsia aquaticaMarshallwaterlocustFabaceae431Little (1977)  redigitized
Gleditsia triacanthosGleditsia triacanthosL.honeylocustFabaceae2594Little (1971)  redigitized
Glossopetalon spinescens var. aridumGlossopetalon spinescens var. aridumM.E. JonesNevada greasebushCrossosomataceae547Benson and Darrow (1981)  new
Glossopetalon spinescens var. spinescensGlossopetalon spinescens var. spinescens spiny greasebushCrossosomataceae15Benson and Darrow (1981)  new
Gordonia lasianthusGordonia lasianthus(L.) J. Ellisloblolly-bayTheaceae337Little (1977)  redigitized
Guaiacum angustifoliumGuaiacum angustifoliumEngelm.Texas lignumvitaeZygophyllaceae153Little (1976)  redigitized
Guapira discolorGuapira discolor(Spreng.) LittleblollyNyctaginaceae3Little (1978)  redigitized
Gutierrezia microcephalaGutierrezia microcephala(DC.) A. Graythreadleaf snakeweedAsteraceae940Benson and Darrow (1981)  new
Gymnocladus dioicusGymnocladus dioicus(L.) K. KochKentucky coffeetreeFabaceae1071Little (1977)  redigitized
Halesia carolinaHalesia carolinaL.Carolina silverbellStyracaceae309Little (1977)  redigitized
Halesia dipteraHalesia dipteraJ. Ellistwo-wing silverbellStyracaceae322Little (1977)  redigitized
Halesia parvifloraHalesia carolinaL.little silverbellStyracaceae32Little (1977)  redigitized
Hamamelis virginianaHamamelis virginianaL.witch-hazelHamamelidaceae2834Little (1977)  redigitized
Hamelia patensHamelia patensJacq.scarletbushRubiaceae74Little (1978)  redigitized
Haplopappus cooperiEricameria cooperi(A. Gray) H.M. HallCooper's goldenbushAsteraceae83Benson and Darrow (1981)  new
Haplopappus cuneatusEricameria cuneata(A. Gray) McClatchiewedgeleaf golden weedAsteraceae116Benson and Darrow (1981)  new
Haplopappus laricifoliusEricameria laricifolia(A. Gray) Shinnersturpentine bushAsteraceae276Benson and Darrow (1981)  new
Haplopappus tenuisectusIsocoma tenuisectaGreeneburro weedAsteraceae94Benson and Darrow (1981)  new
Hazardia brickellioidesHazardia brickellioides(S.F. Blake) W.D. Clarkbrickellbush goldenweedAsteraceae26Calflora (2013)  new
Helietta parvifoliaHelietta parvifolia(A. Gray) Benth.barretaRutaceae7Little (1976)  redigitized
Hesperoyucca newberryiHesperoyucca newberryi(McKelvey) ClaryNewberry's yuccaAsparagaceae10eFloras (2013)Haines (1941) new
Hesperoyucca whippleiHesperoyucca whipplei(Torr.) Bakerchaparral yuccaAsparagaceae105eFloras (2013)Haines (1941); Wells and Woodcock (1985) new
Holacantha emoryiCastela emoryi(Gray) Moran & FelgerholacanthaSimaroubaceae124Little (1976)  redigitized
Hymenoclea salsolaAmbrosia salsola(Torr. & A. Gray) Strother & B.G. BaldwinburrobrushAsteraceae418Benson and Darrow (1981)Peterson and Payne (1973) new
Hyptis emoryiHyptis emoryiTorr.desert lavenderLamiaceae226Benson and Darrow (1981)  new
Ilex ambiguaIlex ambigua(Michx.) Torr.Carolina hollyAquifoliaceae674Little (1977)  redigitized
Ilex amelanchierIlex amelanchierM.A. Curtis ex Chapm.sarvis hollyAquifoliaceae27Little (1977)  redigitized
Ilex cassineIlex cassineL.dahoonAquifoliaceae244Little (1977)  redigitized
Ilex coriaceaIlex coriacea(Pursh) Chapm.large gallberryAquifoliaceae430Little (1977)  redigitized
Ilex deciduaIlex deciduaWalterpossumhawAquifoliaceae1846Little (1977)  redigitized
Ilex laevigataIlex laevigata(Pursh) A. Graysmooth winterberryAquifoliaceae170Little (1977)  redigitized
Ilex montanaIlex montanaTorr. & A. Graymountain winterberryAquifoliaceae382Little (1977)  redigitized
Ilex myrtifoliaIlex myrtifoliaWaltermyrtle dahoonAquifoliaceae279Little (1977)  redigitized
Ilex opacaIlex opacaAitonAmerican hollyAquifoliaceae1839Little (1971)  redigitized
Ilex verticillataIlex verticillata(L.) A. Graycommon winterberryAquifoliaceae2791Little (1977)  redigitized
Ilex vomitoriaIlex vomitoriaAitonyauponAquifoliaceae629Little (1977)  redigitized
Illicium floridanumIllicium floridanumJ. EllisFlorida anise-treeSchisandraceae156Little (1977)  redigitized
Illicium parviflorumIllicium parviflorumMichx. ex Vent.yellow anise-treeSchisandraceae11Little (1977)  redigitized
Janusia gracilisCottsia gracilis(A. Gray) W.R. Anderson & C. Davisslender janusiaMalpighiaceae411Benson and Darrow (1981)  new
Jatropha cardiophyllaJatropha cardiophylla(Torr.) Müll. Arg.limberbushEuphorbiaceae33Benson and Darrow (1981)  new
Jatropha cuneataJatropha cuneataWiggins & RollinslimberbushEuphorbiaceae5Turner and others (1995)  new
Juglans californicaJuglans californicaS. WatsonCalifornia walnutJuglandaceae10Little (1976)  redigitized
Juglans cinereaJuglans cinereaL.butternutJuglandaceae2166Little (1971)  redigitized
Juglans majorJuglans major(Torr.) A. HellerArizona walnutJuglandaceae83Little (1976)  redigitized
Juglans microcarpaJuglans microcarpaBerland.little walnutJuglandaceae50Little (1976)  redigitized
Juglans nigraJuglans nigraL.black walnutJuglandaceae3455Little (1971)  redigitized
Juniperus asheiJuniperus asheiJ. BuchholzAshe juniperCupressaceae66Little (1971)  redigitized
Juniperus californicaJuniperus californicaCarrièreCalifornia juniperCupressaceae125Little (1971); Calflora (2013)  remapped
Juniperus communisJuniperus communisL.common juniperCupressaceae11395Little (1971); Viereck and Little (1975)  redigitized
Juniperus deppeanaJuniperus deppeanaSteud.alligator juniperCupressaceae80Little (1971)  redigitized
Juniperus erythrocarpaJuniperus coahuilensis(Martínez) Gaussen ex R.P. Adamsredberry juniperCupressaceae34Little (1981)  redigitized
Juniperus horizontalisJuniperus horizontalisMoenchcreeping juniperCupressaceae7285Little (1971); Viereck and Little (1975)  redigitized
Juniperus monospermaJuniperus monosperma(Engelm.) Sarg.one-seed juniperCupressaceae212Little (1971)  redigitized
Juniperus occidentalisJuniperus occidentalisHook.western juniperCupressaceae165Little (1971)  redigitized
Juniperus osteospermaJuniperus osteosperma(Torr.) LittleUtah juniperCupressaceae415Little (1971)  redigitized
Juniperus pinchotiiJuniperus pinchotiiSudw. Pinchot juniperCupressaceae144Little (1971)  redigitized
Juniperus scopulorumJuniperus scopulorumSarg.Rocky Mountain juniperCupressaceae844Little (1971)  redigitized
Juniperus silicicolaJuniperus virginiana var. silicicola(Small) A.E. Murraysouthern redcedarCupressaceae207Little (1971)  redigitized
Juniperus virginianaJuniperus virginianaL.eastern redcedarCupressaceae4197Little (1971)  redigitized
Kalmia latifoliaKalmia latifoliaL.mountain-laurelEricaceae1345Little (1977)  redigitized
Koeberlinia spinosaKoeberlinia spinosaZucc.allthornCapparaceae177Little (1976)  redigitized
Krameria grayiKrameria grayiRose & Painterwhite ratanyKrameriaceae373Benson and Darrow (1981)  new
Krameria parvifoliaKrameria erectaWilld. ex Schult.ratanyKrameriaceae423Benson and Darrow (1981)  new
Laguncularia racemosaLaguncularia racemosa(L.) C.F. Gaertn.white-mangroveCombretaceae5Little (1978)  redigitized
Larix laricinaLarix laricina(Du Roi) K. KochtamarackPinaceae8762Little (1971); Viereck and Little (1975)  redigitized
Larix lyalliiLarix lyalliiParl.subalpine larchPinaceae50Little (1971)  redigitized
Larix occidentalisLarix occidentalisNutt.western larchPinaceae245Little (1971)  redigitized
Larrea divaricataLarrea tridentata(Sessé & Moc. ex DC.) Covillecreosote bushZygophyllaceae801Yang (1970)Yang (1970) redigitized
Leitneria floridanaLeitneria floridanaChapm.corkwoodSimaroubaceae22Little (1977)  redigitized
Leucaena pulverulentaLeucaena pulverulenta(Schltdl.) Benth.great leadtreeFabaceae12Little (1976)  redigitized
Leucaena retusaLeucaena retusaBenth.littleleaf leadtreeFabaceae71Little (1976)  redigitized
Libocedrus decurrensCalocedrus decurrens(Torr.) Florinincense-cedarCupressaceae162Little (1971)  redigitized
Lippia wrightiiAloysia wrightiiA. HellerWright lippiaVerbenaceae456Benson and Darrow (1981)  new
Liquidambar styracifluaLiquidambar styracifluaL.sweetgumAltingiaceae2098Little (1971)  redigitized
Liriodendron tulipiferaLiriodendron tulipiferaL.yellow-poplarMagnoliaceae2329Little (1971)  redigitized
Lithocarpus densiflorusLithocarpus densiflorus(Hook. & Arn.) RehdertanoakFagaceae47Little (1971)  redigitized
Lophocereus schottiiPachycereus schottii(Engelm.) D.R. HuntSenitaCactaceae2Turner and others (1995)  new
Lycium andersoniiLycium andersoniiA. GrayAnderson lyciumSolanaceae579Benson and Darrow (1981)  new
Lycium cooperiLycium cooperiA. GrayCooper lyciumSolanaceae236Benson and Darrow (1981)  new
Lycium exsertumLycium exsertumA. GrayArizona desert-thornSolanaceae114Benson and Darrow (1981)  new
Lycium fremontiiLycium fremontiiA. GrayFremont lyciumSolanaceae146Benson and Darrow (1981)  new
Lycium macrodonLycium macrodonA. Graydesert wolfberrySolanaceae61Benson and Darrow (1981)  new
Lycium parishiiLycium parishiiA. GrayParish lyciumSolanaceae103Benson and Darrow (1981)  new
Lyonia ferrugineaLyonia ferruginea(Walter) Nutt.tree lyoniaEricaceae216Little (1977)  redigitized
Lysiloma latisiliquumLysiloma latisiliquum(L.) Benth.Bahama lysilomaFabaceae2Little (1978)  redigitized
Maclura pomiferaMaclura pomifera(Raf.) C.K. Schneid.Osage-orangeMoraceae175Little (1971)  redigitized
Magnolia acuminataMagnolia acuminata(L.) L.cucumbertreeMagnoliaceae740Little (1971)  redigitized
Magnolia asheiMagnolia asheiWeath.Ashe magnoliaMagnoliaceae7Little (1977)  redigitized
Magnolia fraseriMagnolia fraseriWalterFraser magnoliaMagnoliaceae117Little (1977)  redigitized
Magnolia grandifloraMagnolia grandifloraL.southern magnoliaMagnoliaceae582Little (1971)  redigitized
Magnolia macrophyllaMagnolia macrophyllaMichx.bigleaf magnoliaMagnoliaceae231Little (1977)  redigitized
Magnolia pyramidataMagnolia pyramidataW. Bartrampyramid magnoliaMagnoliaceae60Little (1977)  redigitized
Magnolia tripetalaMagnolia tripetala(L.) L.umbrella magnoliaMagnoliaceae277Little (1977)  redigitized
Magnolia virginianaMagnolia virginianaL.sweetbayMagnoliaceae1036Little (1971)  redigitized
Malus angustifoliaMalus angustifolia(Aiton) Michx.southern crab appleRosaceae630Little (1977)  redigitized
Malus coronariaMalus coronaria(L.) Mill.sweet crab appleRosaceae646Little (1977)  redigitized
Malus diversifoliaMalus fusca(Raf.) C.K. Schneid.Oregon crab appleRosaceae437Little (1976); Viereck and Little (1975)  redigitized
Malus ioensisMalus ioensis(Alph. Wood) Brittonprairie crab appleRosaceae572Little (1977)  redigitized
Mammillaria grahamiiMammillaria grahamiiEngelm.Graham pincushion cactusCactaceae238Benson (1982)Benson (1969, 1982); Powell and others (2008) new
Mastichodendron foetidissimumSideroxylon foetidissimumJacq.false-masticSapotaceae3Little (1978)  redigitized
Menodora spinescensMenodora spinescensA. Grayground thornOleaceae152Benson and Darrow (1981)  new
Metopium toxiferumMetopium toxiferum(L.) Krug & Urb.Florida poisontreeAnacardiaceae2Little (1978)  redigitized
Mimosa dysocarpaMimosa dysocarpaBenth.velvet-pod mimosaFabaceae35Benson and Darrow (1981)  new
Mortonia scabrellaMortonia scabrellaA. GrayRio Grande saddlebushCelastraceae47BONAP (2013); Benson and Darrow (1981) The taxonomy of Mortonia differs among the original sources, and we have chosen to follow ITIS, Tropicos, and BONAP in treating M. scabrella, M. sempervirens, and M. utahensis as individual speciesnew
Mortonia sempervirensMortonia sempervirens A. GrayRio Grande saddlebushCelastraceae8BONAP (2013); Powell (1998) The taxonomy of Mortonia differs among the original sources, and we have chosen to follow ITIS, Tropicos, and BONAP in treating M. scabrella, M. sempervirens, and M. utahensis as individual speciesnew
Mortonia utahensisMortonia utahensis(Coville ex Trel.) A. NelsonUtah mortoniaCelastraceae47BONAP (2013); Benson and Darrow (1981) The taxonomy of Mortonia differs among the original sources, and we have chosen to follow ITIS, Tropicos, and BONAP in treating M. scabrella, M. sempervirens, and M. utahensis as individual speciesnew
Morus microphyllaMorus microphyllaBuckleyTexas mulberryMoraceae110Little (1976)  redigitized
Morus rubraMorus rubraL.red mulberryMoraceae4171Little (1971)  redigitized
Myrcianthes fragransMyrcianthes fragrans(Sw.) McVaughtwinberry stopperMyrtaceae9Little (1978)  redigitized
Myrica californicaMorella californica(Cham.) WilburPacific bayberryMyricaceae70Little (1976)  redigitized
Myrica ceriferaMorella cerifera(L.) Smallsouthern bayberryMyricaceae1040Little (1977)  redigitized
Myrica heterophyllaMorella caroliniensis(Mill.) Smallevergreen bayberryMyricaceae464Little (1977)  redigitized
Myrica inodoraMorella inodora(Bartram) Smallodorless bayberryMyricaceae68Little (1977)  redigitized
Myrica pensylvanicaMorella pensylvanica(Mirb.) Kartesznorthern bayberryMyricaceae205Little (1977)  redigitized
Nectandra coriaceaNectandra coriacea(Sw.) Griseb.Florida nectandraLauraceae2Little (1978)  redigitized
Nemopanthus collinusIlex collinaAlexander mountain-hollyAquifoliaceae4Little (1977)  redigitized
Nolina bigeloviiNolina bigelovii(Torr.) S. WatsonBigelow nolinaAsparagaceae58Little (1976); Benson and Darrow (1981)  remapped
Nolina micranthaNolina micrantha I.M. Johnst.chaparral beargrassAsparagaceae45eFloras (2013)  new
Nolina microcarpaNolina microcarpaS. Watsonbear grassAsparagaceae261Benson and Darrow (1981)  new
Nolina texanaNolina texanaS. WatsonsacahuistaAsparagaceae240Benson and Darrow (1981)  new
Nyssa aquaticaNyssa aquaticaL.water tupeloNyssaceae689Little (1971)  redigitized
Nyssa ogecheNyssa ogecheBartram ex MarshallOgeechee tupeloNyssaceae120Little (1971)  redigitized
Nyssa sylvaticaNyssa sylvaticaMarshallblack tupeloNyssaceae2940Little (1971)  redigitized
Olneya tesotaOlneya tesotaA. GraytesotaFabaceae156Little (1976)  redigitized
Opuntia basilarisOpuntia basilarisEngelm. & J.M. Bigelowbeavertail cactusCactaceae345Benson (1982)Benson (1969, 1982) new
Opuntia chloroticaOpuntia chloroticaEngelm. & J.M. Bigelowpancake pricklypearCactaceae219Benson (1982)Benson (1969, 1982) new
Osmanthus americanusOsmanthus americanus(L.) Benth. & Hook. f. ex A. GraydevilwoodOleaceae437Little (1977)  redigitized
Ostrya knowltoniiOstrya knowltoniiCovilleKnowlton hophornbeamBetulaceae6Little (1976)  redigitized
Ostrya virginianaOstrya virginiana(Mill.) K. Kocheastern hophornbeamBetulaceae4491Little (1971)  redigitized
Oxydendrum arboreumOxydendrum arboreum(L.) DC.sourwoodEricaceae1090Little (1977)  redigitized
Parkinsonia aculeataParkinsonia aculeataL.Jerusalem-thornFabaceae18Little (1976)  redigitized
Parthenium incanumParthenium incanumKunthmariolaAsteraceae337Benson and Darrow (1981)  new
Perityle emoryiPerityle emoryiTorr.Emory's rockdaisyAsteraceae224SEINet (2013); Calflora (2013)  new
Persea borboniaPersea borbonia(L.) Spreng.redbayLauraceae720Little (1977)  redigitized
Peucephyllum schottiiPeucephyllum schottiiA. Graypygmy cedarAsteraceae188Benson and Darrow (1981)  new
Phoradendron californicumPhoradendron californicumNutt.desert mistletoeSantalaceae308Benson and Darrow (1981)  new
Photinia arbutifoliaHeteromeles arbutifolia(Lindl.) M. Roem.Christmas-berryRosaceae108Little (1976)  redigitized
Picea brewerianaPicea brewerianaS. WatsonBrewer sprucePinaceae2Little (1971)  redigitized
Picea engelmanniiPicea engelmanniiParry ex Engelm.Engelmann sprucePinaceae1067Little (1971)  redigitized
Picea glaucaPicea glauca(Moench) Vosswhite sprucePinaceae9945Little (1971); Viereck and Little (1975)  redigitized
Picea marianaPicea mariana(Mill.) Britton, Sterns & Poggenb.black sprucePinaceae10036Little (1971); Viereck and Little (1975)  redigitized
Picea pungensPicea pungensEngelm.blue sprucePinaceae127Little (1971)  redigitized
Picea rubensPicea rubensSarg.red sprucePinaceae599Little (1971)  redigitized
Picea sitchensisPicea sitchensis(Bong.) CarrièreSitka sprucePinaceae418Little (1971); Viereck and Little (1975)  redigitized
Pinckneya pubensPinckneya bracteata(Bartram) Raf.pinckneyaRubiaceae101Little (1977)  redigitized
Pinus albicaulisPinus albicaulisEngelm.whitebark pinePinaceae582Little (1971)  redigitized
Pinus aristataPinus aristataEngelm.bristlecone pinePinaceae17Little (1971)Bailey (1970)We follow Bailey (1970) in the division of what was Pinus aristata (as mapped in Little [1971]) into Pinus aristata and Pinus longaevaredigitized
Pinus attenuataPinus attenuataLemmonknobcone pinePinaceae26Little (1971)  redigitized
Pinus balfourianaPinus balfourianaBalf.foxtail pinePinaceae5Little (1971)  redigitized
Pinus banksianaPinus banksianaLamb.jack pinePinaceae4670Little (1971)  redigitized
Pinus cembroidesPinus cembroidesZucc.Mexican pinyonPinaceae41Little (1971); eFloras (2013); SEINet (2013) We follow eFloras and Little (1971) in treating Pinus discolor and Pinus remota as part of Pinus cembroidesremapped
Pinus clausaPinus clausa(Chapm. ex Engelm.) Sarg.sand pinePinaceae87Little (1971)  redigitized
Pinus contortaPinus contortaDouglas ex Loudonlodgepole pinePinaceae2319Little (1971); Viereck and Little (1975)  redigitized
Pinus coulteriPinus coulteriLamb. ex D. DonCoulter pinePinaceae6Little (1971)  redigitized
Pinus echinataPinus echinataMill.shortleaf pinePinaceae1645Little (1971)  redigitized
Pinus edulisPinus edulisEngelm.pinyonPinaceae364Little (1971)  redigitized
Pinus elliottiiPinus elliottiiEngelm.slash pinePinaceae379Little (1971)  redigitized
Pinus engelmanniiPinus engelmanniiCarrièreApache pinePinaceae7Little (1971)  redigitized
Pinus flexilisPinus flexilisJameslimber pinePinaceae351Little (1971)  redigitized
Pinus glabraPinus glabraWalterspruce pinePinaceae337Little (1971)  redigitized
Pinus jeffreyiPinus jeffreyiBalf.Jeffrey pinePinaceae115Little (1971)  redigitized
Pinus lambertianaPinus lambertianaDouglassugar pinePinaceae157Little (1971)  redigitized
Pinus leiophyllaPinus leiophyllaSchiede ex Schltdl. & Cham.Chihuahua pinePinaceae13Little (1971); Critchfield & Little (1966)  redigitized
Pinus longaevaPinus longaevaD.K. BaileyIntermountain bristlecone pinePinaceae33Bailey (1970); Little (1971)Bailey, 1970We follow Bailey (1970) in the division of what was Pinus aristata (as mapped in Little [1971]) into Pinus aristata and Pinus longaeva. We further revised the distribution of Pinus longaeva based on newer sourcesremapped
Pinus monophyllaPinus monophyllaTorr. & Frém.singleleaf pinyonPinaceae120Little (1971)  redigitized
Pinus monticolaPinus monticolaDouglas ex D. Donwestern white pinePinaceae462Little (1971)  redigitized
Pinus muricataPinus muricataD. Donbishop pinePinaceae3Little (1971)  redigitized
Pinus palustrisPinus palustrisMill.longleaf pinePinaceae773Little (1971)  redigitized
Pinus ponderosaPinus ponderosaDouglas ex Lawson & C. Lawsonponderosa pinePinaceae912Little (1971)  redigitized
Pinus pungensPinus pungensLamb.Table-Mountain pinePinaceae132Little (1971)  redigitized
Pinus quadrifoliaPinus quadrifoliaParl. ex Sudw.Parry pinyonPinaceae5Little (1971); Calflora (2013)  remapped
Pinus resinosaPinus resinosaAitonred pinePinaceae1757Little (1971)  redigitized
Pinus rigidaPinus rigidaMill.pitch pinePinaceae714Little (1971)  redigitized
Pinus sabinianaPinus sabinianaDouglas ex D. Don Digger pinePinaceae60Little (1971)  redigitized
Pinus serotinaPinus serotinaMichx.pond pinePinaceae465Little (1971)  redigitized
Pinus strobiformisPinus strobiformisEngelm.southwestern white pinePinaceae23Little (1971); Critchfield and Little (1966)  redigitized
Pinus strobusPinus strobusL.eastern white pinePinaceae2763Little (1971)  redigitized
Pinus taedaPinus taedaL.loblolly pinePinaceae1287Little (1971)  redigitized
Pinus virginianaPinus virginianaMill.Virginia pinePinaceae796Little (1971)  redigitized
Pithecellobium flexicauleEbenopsis ebano(Berland.) Barneby & J.W. Grimesebony blackbeadFabaceae37Little (1976)  redigitized
Pithecellobium guadalupensePithecellobium keyenseBrittonGuadeloupe blackbeadFabaceae4Little (1978)  redigitized
Pithecellobium pallensHavardia pallens(Benth.) Britton & RosehuajilloFabaceae58Little (1976)  redigitized
Planera aquaticaPlanera aquaticaJ.F. Gmel.planertreeUlmaceae635Little (1977)  redigitized
Platanus occidentalisPlatanus occidentalisL.American sycamorePlatanaceae3757Little (1971)  redigitized
Platanus racemosaPlatanus racemosaNutt.California sycamorePlatanaceae86Little (1976)  redigitized
Platanus wrightiiPlatanus wrightiiS. WatsonArizona sycamorePlatanaceae106Little (1976)  redigitized
Populus angustifoliaPopulus angustifoliaE. Jamesnarrowleaf cottonwoodSalicaceae464Little (1976)  redigitized
Populus balsamiferaPopulus balsamiferaL.balsam poplarSalicaceae8855Little (1971); Viereck and Little (1975)  redigitized
Populus deltoidesPopulus deltoidesW. Bartram ex Marshalleastern cottonwoodSalicaceae5749Little (1971)  redigitized
Populus fremontiiPopulus fremontiiS. WatsonFremont cottonwoodSalicaceae329Little (1971, 1976) P. fremontii now includes what Little (1976) mapped as P. arizonicatwo species were merged
Populus grandidentataPopulus grandidentataMichx.bigtooth aspenSalicaceae3028Little (1971)  redigitized
Populus heterophyllaPopulus heterophyllaL.swamp cottonwoodSalicaceae314Little (1971)  redigitized
Populus tremuloidesPopulus tremuloidesMichx.quaking aspenSalicaceae10856Little (1971); Viereck and Little (1975)  redigitized
Populus trichocarpaPopulus trichocarpaTorr. & A. Grayblack cottonwoodSalicaceae1872Little (1971); Viereck and Little (1975)  redigitized
Prosopis glandulosaProsopis glandulosaTorr.honey mesquiteFabaceae1889Benson and Darrow (1981); SEINet (2013); Calflora (2013)Burkart (1976)Prosopis glandulosa as used here includes what has been known as either Prosopis glandulosa var. torreyana or Prosopis juliflora var. torreyananew
Prosopis pubescensProsopis pubescensBenth.screwbean mesquiteFabaceae203Little (1976)  redigitized
Prosopis velutinaProsopis velutinaWootonvelvet mesquiteFabaceae182Turner and others (1995); Benson and Darrow (1981)Burkart (1976) new
Prunus alleghaniensisPrunus umbellataElliottAllegheny plumRosaceae20Little (1977)  redigitized
Prunus americanaPrunus americanaMarshallAmerican plumRosaceae3656Little (1976, 1977)  redigitized
Prunus carolinianaPrunus caroliniana(Mill.) AitonCarolina laurelcherryRosaceae598Little (1977)  redigitized
Prunus emarginataPrunus emarginata(Douglas) Eatonbitter cherryRosaceae746Little (1976)  redigitized
Prunus fasciculataPrunus fasciculata(Torr.) A. Graydesert almondRosaceae307Benson and Darrow (1981); Calflora (2013)  new
Prunus fremontiiPrunus fremontiiS. Watsondesert apricotRosaceae5Little (1976)  redigitized
Prunus hortulanaPrunus hortulanaL.H. Baileyhortulan plumRosaceae263Little (1977)  redigitized
Prunus ilicifoliaPrunus ilicifolia ssp. ilicifolia hollyleaf cherryRosaceae55Little (1976)  redigitized
Prunus mexicanaPrunus mexicanaS. WatsonMexican plumRosaceae1043Little (1977)  redigitized
Prunus munsonianaPrunus rivularisScheelewildgoose plumRosaceae249Little (1977)  redigitized
Prunus nigraPrunus nigraAitonCanada plumRosaceae734Little (1977)  redigitized
Prunus pensylvanicaPrunus pensylvanicaL. f.pin cherryRosaceae6746Little (1976, 1977)  redigitized
Prunus serotinaPrunus serotinaEhrh.black cherryRosaceae4671Little (1971)  redigitized
Prunus subcordataPrunus subcordataBenth.Klamath plumRosaceae157Little (1976)  redigitized
Prunus umbellataPrunus umbellataElliottflatwoods plumRosaceae710Little (1977)  redigitized
Prunus virginianaPrunus virginianaL.common chokecherryRosaceae8865Little (1976, 1977)  redigitized
Pseudotsuga macrocarpaPseudotsuga macrocarpa(Vasey) Mayrbigcone Douglas-firPinaceae11Little (1971)  redigitized
Pseudotsuga menziesiiPseudotsuga menziesii(Mirb.) FrancoDouglas-firPinaceae1543Little (1971)  redigitized
Psorothamnus thompsoniaePsorothamnus thompsoniae(Vail) S.L. Welsh & N.D. AtwoodThompson daleaFabaceae38SEINet (2013); Schultz and others (2010, Digital Atlas of the Vascular Plants of Utah)  new
Ptelea crenulataPtelea crenulataGreeneCalifornia hoptreeRutaceae38Little (1976)  redigitized
Ptelea trifoliataPtelea trifoliataL.common hoptreeRutaceae2285Little (1976)  redigitized
Purshia glandulosaPurshia tridentata var. glandulosa(Curran) M.E. JonesMojave antelope brushRosaceae77Benson and Darrow (1981)  new
Quercus agrifoliaQuercus agrifoliaNéeCalifornia live oakFagaceae81Little (1971)  redigitized
Quercus albaQuercus albaL.white oakFagaceae3747Little (1971)  redigitized
Quercus arizonicaQuercus arizonicaSarg.Arizona white oakFagaceae64Little (1976)  redigitized
Quercus arkansanaQuercus arkansanaSarg.Arkansas oakFagaceae20Little (1977)  redigitized
Quercus bicolorQuercus bicolorWilld.swamp white oakFagaceae1306Little (1971)  redigitized
Quercus chapmaniiQuercus chapmaniiSarg.Chapman oakFagaceae129Little (1977)  redigitized
Quercus chrysolepisQuercus chrysolepisLiebm.canyon live oakFagaceae170Little (1971)  redigitized
Quercus coccineaQuercus coccineaMünchh.scarlet oakFagaceae1399Little (1971)  redigitized
Quercus cornelius-mulleriQuercus cornelius-mulleriNixon & K.P. SteeleMuller oakFagaceae15Nixon and Steele (1981)Nixon (2002); Nixon and Steele (1981); Pavlik and others (1991)The taxon that Little (1976) considered to be Q. turbinella has been divided into three species (Q. turbinella, Q. cornelius-mulleri, and Q. john-tuckeri)new
Quercus douglasiiQuercus douglasiiHook. & Arn.blue oakFagaceae92Little (1971)  redigitized
Quercus dunniiQuercus palmeriEngelm.Dunn oakFagaceae29Little (1976)  redigitized
Quercus durandiiQuercus sinuataWalterDurand oakFagaceae272Little (1977)  redigitized
Quercus ellipsoidalisQuercus ellipsoidalisE.J. Hillnorthern pin oakFagaceae433Little (1971)  redigitized
Quercus emoryiQuercus emoryiTorr.Emory oakFagaceae45Little (1971)  redigitized
Quercus engelmanniiQuercus engelmanniiGreeneEngelmann oakFagaceae7Little (1976)  redigitized
Quercus falcataQuercus falcataMichx.southern red oakFagaceae2003Little (1971)  redigitized
Quercus gambeliiQuercus gambeliiNutt.Gambel oakFagaceae578Little (1971); SEINet (2013)  remapped
Quercus garryanaQuercus garryanaDouglas ex Hook.Oregon white oakFagaceae188Little (1971)  redigitized
Quercus georgianaQuercus georgianaM.A. CurtisGeorgia oakFagaceae5Little (1977)  redigitized
Quercus glaucoidesQuercus laceyiSmallLacey oakFagaceae24Little (1976)  redigitized
Quercus gravesiiQuercus gravesiiSudw.Graves oakFagaceae7Little (1976)  redigitized
Quercus griseaQuercus griseaLiebm.gray oakFagaceae41Little (1976)  redigitized
Quercus havardiiQuercus havardiiRydb.Havard oakFagaceae114Little (1976)  redigitized
Quercus hinckleyiQuercus hinckleyiC.H. Mull.Hinckley oakFagaceae5eFloras (2013)  new
Quercus hypoleucoidesQuercus hypoleucoidesA. Camussilverleaf oakFagaceae18Little (1976)  redigitized
Quercus ilicifoliaQuercus ilicifoliaWangenh.bear oakFagaceae309Little (1977)  redigitized
Quercus imbricariaQuercus imbricariaMichx.shingle oakFagaceae987Little (1977)  redigitized
Quercus incanaQuercus incanaW. Bartrambluejack oakFagaceae587Little (1977)  redigitized
Quercus john-tuckeriQuercus john-tuckeriNixon & C.H. Mull.Tucker oakFagaceae29Calflora (2013); SEINet (2013)Nixon (2002); Nixon and Muller (1994); Pavlik and others (1991)The taxon that Little (1976) considered to be Q. turbinella has been divided into three species (Q. turbinella, Q. cornelius-mulleri, and Q. john-tuckeri)new
Quercus kelloggiiQuercus kelloggiiNewb.California black oakFagaceae125Little (1971)  redigitized
Quercus laevisQuercus laevisWalterturkey oakFagaceae560Little (1977)  redigitized
Quercus laurifoliaQuercus laurifoliaMichx.laurel oakFagaceae768Little (1971)  redigitized
Quercus lobataQuercus lobataNéeCalifornia white oakFagaceae142Little (1971)  redigitized
Quercus lyrataQuercus lyrataWalterovercup oakFagaceae1358Little (1971)  redigitized
Quercus macrocarpaQuercus macrocarpaMichauxbur oakFagaceae3685Little (1971)  redigitized
Quercus marilandicaQuercus marilandicaMünchh.blackjack oakFagaceae2757Little (1971)  redigitized
Quercus michauxiiQuercus michauxiiNuttallswamp chestnut oakFagaceae1427Little (1971)  redigitized
Quercus mohrianaQuercus mohrianaBuckley ex Rydb.Mohrs oakFagaceae106Little (1976)  redigitized
Quercus muehlenbergiiQuercus muehlenbergiiEngelm.chinkapin oakFagaceae2588Little (1971)  redigitized
Quercus myrtifoliaQuercus myrtifoliaWilld.myrtle oakFagaceae145Little (1977)  redigitized
Quercus nigraQuercus nigraL.water oakFagaceae1575Little (1971)  redigitized
Quercus nuttalliiQuercus texanaBuckleyNuttall oakFagaceae406Little (1971)  redigitized
Quercus oblongifoliaQuercus oblongifoliaTorr.Mexican blue oakFagaceae8Little (1976)  redigitized
Quercus oglethorpensisQuercus oglethorpensisW.H. DuncanOglethorpe oakFagaceae8Little (1977)  redigitized
Quercus palustrisQuercus palustrisMünchh.pin oakFagaceae1360Little (1971)  redigitized
Quercus phellosQuercus phellosL.willow oakFagaceae1500Little (1971)  redigitized
Quercus prinusQuercus montanaWilldenowchestnut oakFagaceae1196Little (1971)  redigitized
Quercus pungensQuercus pungensLiebm.sandpaper oakFagaceae76Little (1976); Benson and Darrow (1981)  remapped
Quercus rubraQuercus rubraL.northern red oakFagaceae4325Little (1971)  redigitized
Quercus rugosaQuercus rugosaNéenetleaf oakFagaceae12Little (1976)  redigitized
Quercus shumardiiQuercus shumardiiBuckleyShumard oakFagaceae2206Little (1971)  redigitized
Quercus stellataQuercus stellataWangenh.post oakFagaceae3195Little (1971)  redigitized
Quercus toumeyiQuercus toumeyiSarg.Toumey oakFagaceae9Little (1976)  redigitized
Quercus turbinellaQuercus turbinellaGreenescrub oakFagaceae243SEINet (2013); Nixon and Steele (1981); Benson and Darrow (1981); Little (1976)Nixon (2002); Nixon and Steele (1981); Pavlik and others (1991)The taxon that Little (1976) considered to be Q. turbinella has been divided into three species (Q. turbinella, Q. cornelius-mulleri, and Q. john-tuckeri)remapped
Quercus undulata complexQuercus undulata complex wavy leaf oak complexFagaceae630Tucker (1961)Cottam and others (1959); Tucker (1961)The taxonomy of this taxon is ambiguous. eFloras describes the difficulty: "Numerous putative hybrid swarms occur throughout the range of Quercus gambelii that involve a number of suspected parental species. Most of these populations have, at one time or another, been referred to as Quercus undulata Torrey. ... Because of the complex variability in these populations, no effort has been made to treat them separately here; indeed, it would be impossible to produce usable keys if these were included as formal taxa."new
Quercus velutinaQuercus velutinaLam.black oakFagaceae3429Little (1971)  redigitized
Quercus virginianaQuercus virginianaMill.live oakFagaceae757Little (1971)  redigitized
Quercus wislizeniQuercus wislizeniA. DC.interior live oakFagaceae117Little (1976)  redigitized
Rapanea punctataMyrsine cubanaA. DC.Florida rapaneaPrimulaceae58Little (1978)  redigitized
Rhamnus betulaefoliaFrangula betulifolia(Greene) Grubovbirchleaf buckthornRhamnaceae60Little (1976)  redigitized
Rhamnus californicaFrangula californica(Eschsch.) A. Gray California buckthornRhamnaceae274Little (1976)  redigitized
Rhamnus carolinianaFrangula caroliniana(Walter) A. Gray Carolina buckthornRhamnaceae1163Little (1977)  redigitized
Rhamnus croceaRhamnus croceaNutt.hollyleaf buckthornRhamnaceae150Little (1976)  redigitized
Rhamnus purshianaFrangula purshiana(DC.) A. Graycascara buckthornRhamnaceae498Little (1971)  redigitized
Rhizophora mangleRhizophora mangleL.mangroveRhizophoraceae10Little (1971, 1978)  redigitized
Rhododendron catawbienseRhododendron catawbienseMichx.Catawba rhododendronEricaceae109Little (1977)  redigitized
Rhododendron macrophyllumRhododendron macrophyllumD. Don ex G. DonPacific rhododendronEricaceae107Little (1976)  redigitized
Rhododendron maximumRhododendron maximumL.rosebay rhododendronEricaceae495Little (1977)  redigitized
Rhus choriophyllaRhus virens var. choriophylla(Wooton & Standl.) L.D. BensonMearns sumacAnacardiaceae12Little (1976)  redigitized
Rhus copallinaRhus copallinumL.shining sumacAnacardiaceae3021Little (1977)  redigitized
Rhus glabraRhus glabraL.smooth sumacAnacardiaceae4319Little (1976, 1977)  redigitized
Rhus integrifoliaRhus integrifolia(Nutt.) Benth. & Hook. f. ex Rothr.lemonade sumacAnacardiaceae9Little (1976)  redigitized
Rhus lanceolataRhus lanceolata(A. Gray) Brittonprairie sumacAnacardiaceae134Little (1976)  redigitized
Rhus laurinaMalosma laurina(Nutt.) Nutt. ex Abramslaurel sumacAnacardiaceae9Little (1976)  redigitized
Rhus microphyllaRhus microphyllaEngelm.littleleaf sumacAnacardiaceae334Little (1976)  redigitized
Rhus ovataRhus ovataS. Watsonsugar sumacAnacardiaceae35Little (1976)  redigitized
Rhus typhinaRhus typhinaL.staghorn sumacAnacardiaceae1888Little (1977)  redigitized
Robinia kelseyiRobinia hispida var. kelseyi(Cowell ex Hutch.) IselyKelsey locustFabaceae3Little (1977)  redigitized
Robinia neomexicanaRobinia neomexicanaA. GrayNew Mexican locustFabaceae72Little (1976)  redigitized
Robinia pseudoacaciaRobinia pseudoacaciaL.black locustFabaceae653Little (1971)  redigitized
Robinia viscosaRobinia viscosaVent.clammy locustFabaceae21Little (1977)  redigitized
Sabal mexicanaSabal mexicanaMart.Mexican palmettoArecaceae2Little (1976)  redigitized
Sabal minorSabal minor(Jacq.) Pers.dwarf palmettoArecaceae909Little (1977)  redigitized
Sabal palmettoSabal palmetto(Walter) Lodd. ex Schult. & Schult. f.cabbage palmettoArecaceae170Little (1971)  redigitized
Salazaria mexicanaSalazaria mexicanaTorr.bladder sageLamiaceae195Benson and Darrow (1981)  new
Salix alaxensisSalix alaxensis(Andersson) Covillefeltleaf willowSalicaceae3674Little (1976); Viereck and Little (1975)  redigitized
Salix amygdaloidesSalix amygdaloidesAnderssonpeachleaf willowSalicaceae5018Little (1971)  redigitized
Salix arbusculoidesSalix arbusculoidesAnderssonpeachleaf willowSalicaceae4640Little (1976); Viereck and Little (1975)  redigitized
Salix bebbianaSalix bebbianaSarg.Bebb willowSalicaceae9329Little (1976, 1977); Viereck and Little (1975)  redigitized
Salix bonplandianaSalix bonplandianaKunthBonpland willowSalicaceae67Little (1976)  redigitized
Salix carolinianaSalix carolinianaMichx. Coastal Plain willowSalicaceae893Little (1977)  redigitized
Salix discolorSalix discolorMuhl.pussy willowSalicaceae5471Little (1976, 1977)  redigitized
Salix exiguaSalix exigua / Salix interiorNutt. / Rowlee coyote willowSalicaceae9490Little (1976, 1977)  redigitized
Salix floridanaSalix floridanaChapm.Florida willowSalicaceae8Little (1977)  redigitized
Salix fluviatilisSalix columbiana(Dorn) Argusriver willowSalicaceae9Little (1976)  redigitized
Salix geyerianaSalix geyerianaAnderssonGeyer willowSalicaceae454Little (1976)  redigitized
Salix hindsianaSalix exigua var. hindsiana(Benth.) DornHinds willowSalicaceae219Little (1976)  redigitized
Salix hookerianaSalix hookerianaBarratt ex Hook.Hooker willowSalicaceae56Little (1976); Viereck and Little (1975)  redigitized
Salix laevigataSalix laevigataBebbred willowSalicaceae174Little (1976)  redigitized
Salix lasiandraSalix lasiandraBenth.Pacific willowSalicaceae3666Little (1976); Viereck and Little (1975)  redigitized
Salix lasiolepisSalix lasiolepisBenth.arroyo willowSalicaceae367Little (1976)  redigitized
Salix lucidaSalix lucidaMuhl.shining willowSalicaceae4858Little (1977)  redigitized
Salix mackenzieanaSalix prolixaAnderssonMackenzie willowSalicaceae2089Little (1976)  redigitized
Salix nigraSalix nigra / Salix goodingiiMarshall / C.R. Ballblack willowSalicaceae5011Little (1971, 1976)  redigitized
Salix pellitaSalix pellita(Andersson) Bebbsatiny willowSalicaceae2446Little (1977)  redigitized
Salix petiolarisSalix petiolarisSm.meadow willowSalicaceae3166Little (1976, 1977)  redigitized
Salix pyrifoliaSalix pyrifoliaAnderssonbalsam willowSalicaceae4487Little (1977)  redigitized
Salix scoulerianaSalix scoulerianaBarratt ex Hook.Scouler willowSalicaceae4607Little (1976); Viereck and Little (1975)  redigitized
Salix sericeaSalix sericeaMarshallsilky willowSalicaceae1468Little (1977)  redigitized
Salix sessilifoliaSalix sessilifoliaNutt.northwest willowSalicaceae25Little (1976)  redigitized
Salix sitchensisSalix sitchensisSanson ex Bong.Sitka willowSalicaceae745Little (1976); Viereck and Little (1975)  redigitized
Salix taxifoliaSalix taxifoliaKunthyewleaf willowSalicaceae10Little (1976)  redigitized
Salix tracyiSalix tracyiC.R. Ball Tracy willowSalicaceae18Little (1976)  redigitized
Salvia dorriiSalvia dorrii(Kellogg) Abramsdesert sageLamiaceae507SEINet (2013); Calflora (2013); Oregon Flora Project (2013); Schultz and others (2010, Digital Atlas of the Vascular Plants of Utah)Strachan (1982) new
Salvia mohavensisSalvia mohavensisGreeneMojave sageLamiaceae94Benson and Darrow (1981)  new
Salvia pinguifoliaSalvia pinguifolia(Fernald) Wooton & Standl.rock sageLamiaceae129Benson and Darrow (1981)  new
Sambucus callicarpaSambucus racemosa var. racemosa Pacific red elderCaprifoliaceae564Little (1976); Viereck and Little (1975)  redigitized
Sambucus canadensisSambucus nigra ssp. canadensis(L.) R. BolliAmerican elderCaprifoliaceae5242Little (1977)  redigitized
Sambucus glaucaSambucus nigra ssp. cerulea (in part)(Raf.) R. Bolliblueberry elderCaprifoliaceae725Little (1976)  redigitized
Sambucus melanocarpaSambucus racemosa var. melanocarpa(A. Gray) McMinnblackbead elderCaprifoliaceae281Little (1976)  redigitized
Sambucus mexicanaSambucus nigra ssp. cerulea (in part)(Raf.) R. BolliMexican elderCaprifoliaceae67Little (1976)  redigitized
Sambucus velutinaSambucus nigra ssp. cerulea (in part)(Raf.) R. Bollivelvet elderCaprifoliaceae19Little (1976)  redigitized
Sapindus drummondiiSapindus saponaria var. drummondii(Hook. & Arn.) L.D. Bensonwestern soapberrySapindaceae1003Little (1976, 1977)  redigitized
Sapindus saponariaSapindus saponariaL.wingleaf soapberrySapindaceae2Little (1977, 1978)  redigitized
Sapium biloculareSebastiania bilocularisS. Watsonjumping-bean sapiumEuphorbiaceae11Little (1976)  redigitized
Sassafras albidumSassafras albidum(Nutt.) NeessassafrasLauraceae3232Little (1971)  redigitized
Sequoia sempervirensSequoia sempervirens(D. Don) Endl.redwoodCupressaceae18Little (1971)  redigitized
Sequoiadendron giganteumSequoiadendron giganteum(Lindl.) J. BuchholzSierra redwoodCupressaceae14Calflora (2013); Little (1971)  remapped
Serenoa repensSerenoa repens(W. Bartram) Smallsaw-palmettoArecaceae293Little (1977)  redigitized
Shepherdia argenteaShepherdia argentea(Pursh) Nutt.silver buffaloberryElaeagnaceae1470Little (1976, 1977)  redigitized
Shepherdia rotundifoliaShepherdia rotundifoliaParryroundleaf buffaloberryElaeagnaceae123SEINet (2013); Schultz and others (2010, Digital Atlas of the Vascular Plants of Utah)  new
Simarouba glaucaSimarouba glaucaDC.paradise-treeSimaroubaceae3Little (1978)  redigitized
Simmondsia chinensisSimmondsia chinensis(Link) C.K. Schneid.jojobaSimmondsiaceae200Benson and Darrow (1981)  new
Solanum erianthumSolanum erianthumD. Donmullein nightshadeSolanaceae10Little (1977, 1978)  redigitized
Sophora affinisStyphnolobium affine(Torr. & A. Gray) Walp.Texas sophoraFabaceae117Little (1977)  redigitized
Sophora secundifloraSophora secundiflora(Ortega) Lag. ex DC. mescalbeanFabaceae136Little (1976)  redigitized
Sorbus americanaSorbus americanaMarshallAmerican mountain-ashRosaceae2812Little (1977)  redigitized
Sorbus decoraSorbus decora(Sarg.) C.K. Schneid.showy mountain-ashRosaceae3517Little (1977)  redigitized
Sorbus scopulinaSorbus scopulinaGreeneGreene mountain-ashRosaceae1656Little (1976); Viereck and Little (1975)  redigitized
Sorbus sitchensisSorbus sitchensisM. Roem.Sitka mountain-ashRosaceae990Little (1976); Viereck and Little (1975)  redigitized
Staphylea bolanderiStaphylea bolanderiA. GraySierra bladdernutStaphyleaceae17Little (1976)  redigitized
Staphylea trifoliaStaphylea trifoliaL.American bladdernutStaphyleaceae1874Little (1977)  redigitized
Stenocereus thurberiStenocereus thurberi(Engelm.) Buxb.organpipe cactusCactaceae9Turner and others (1995)Yetman (2006) new
Stewartia malacodendronStewartia malacodendronL.Virginia stewartiaTheaceae141Little (1977)  redigitized
Stewartia ovataStewartia ovata(Cav.) Weath.mountain stewartiaTheaceae80Little (1977)  redigitized
Styrax americanaStyrax americanusLam.American snowbellStyracaceae1056Little (1977)  redigitized
Styrax grandifoliaStyrax grandifoliusAitonbigleaf snowbellStyracaceae758Little (1977)  redigitized
Styrax platanifoliaStyrax platanifoliusEngelm. ex Torr.sycamore-leaf snowbellStyracaceae31Little (1977)  redigitized
Suriana maritimaSuriana maritimaL.baycedarSurianaceae2Little (1978)  redigitized
Symphoricarpos longiflorusSymphoricarpos longiflorusA. Graydesert snowberryCaprifoliaceae492SEINet (2013); Calflora (2013); Oregon Flora Project (2013); Schultz and others (2010, Digital Atlas of the Vascular Plants of Utah)  new
Symplocos tinctoriaSymplocos tinctoria(L.) L'Hér.common sweetleafSymplocaceae922Little (1977)  redigitized
Taxodium distichumTaxodium distichum(L.) Rich.baldcypressCupressaceae1311Little (1971)  redigitized
Taxus brevifoliaTaxus brevifoliaNutt.Pacific yewTaxaceae566Little (1971); Viereck and Little (1975)  redigitized
Taxus canadensisTaxus canadensisMarshallCanada yewTaxaceae3557Little (1971)  redigitized
Tetradymia glabrataTetradymia glabrataTorr. & A. Graylittleleaf horsebrushAsteraceae567SEINet (2013); Calflora (2013); Oregon Flora Project (2013); Schultz and others (2010, Digital Atlas of the Vascular Plants of Utah)  new
Tetradymia stenolepisTetradymia stenolepisGreeneMojave horse brushAsteraceae34Benson and Darrow (1981)   new
Thamnosma montanaThamnosma montanaTorr. & Frém.turpentine broomRutaceae261Benson and Darrow (1981)   new
Thuja occidentalisThuja occidentalisL.northern white-cedarCupressaceae2420Little (1971)  redigitized
Thuja plicataThuja plicataDonn ex D. Donwestern redcedarCupressaceae607Little (1971); Viereck and Little (1975)  redigitized
Tilia americanaTilia americana var. americana American basswoodMalvaceae3314Little (1971)  redigitized
Tilia carolinianaTilia americana var. caroliniana(P. Mill.) Castigl. Carolina basswoodMalvaceae999Little (1977)  redigitized
Tilia heterophyllaTilia americana var. heterophylla(Vent.) Loud.white basswoodMalvaceae833Little (1971)  redigitized
Torreya californicaTorreya californicaTorr.California torreyaTaxaceae4Little (1971)  redigitized
Toxicodendron vernixToxicodendron vernix(L.) Kuntzepoison-sumacAnacardiaceae850Little (1977)  redigitized
Trema micranthaTrema micrantha(L.) BlumeFlorida tremaCannabaceae18Little (1978)  redigitized
Trixis californicaTrixis californicaKelloggAmerican threefoldAsteraceae402Benson and Darrow (1981)   new
Tsuga canadensisTsuga canadensis(L.) Carrièreeastern hemlockPinaceae1790Little (1971)  redigitized
Tsuga carolinianaTsuga carolinianaEngelm.Carolina hemlockPinaceae27Little (1971)  redigitized
Tsuga heterophyllaTsuga heterophylla(Raf.) Sarg.western hemlockPinaceae647Little (1971); Viereck and Little (1975)  redigitized
Tsuga mertensianaTsuga mertensiana(Bong.) Carrièremountain hemlockPinaceae371Little (1971); Viereck and Little (1975)  redigitized
Ulmus alataUlmus alataMichx.winged elmUlmaceae1810Little (1971)  redigitized
Ulmus americanaUlmus americanaL.American elmUlmaceae7780Little (1971)  redigitized
Ulmus crassifoliaUlmus crassifoliaNutt.cedar elmUlmaceae643Little (1971)  redigitized
Ulmus rubraUlmus rubraMuhl.slippery elmUlmaceae4198Little (1971)  redigitized
Ulmus serotinaUlmus serotinaSarg.September elmUlmaceae63Little (1971)  redigitized
Ulmus thomasiiUlmus thomasiiSarg.rock elmUlmaceae1187Little (1971)  redigitized
Umbellularia californicaUmbellularia californica(Hook. & Arn.) Nutt.California-laurelLauraceae122Little (1971)  redigitized
Ungnadia speciosaUngnadia speciosaEndl.Mexican-buckeyeSapindaceae38Little (1976)  redigitized
Vaccinium arboreumVaccinium arboreumMarshalltree sparkleberryEricaceae1638Little (1977)  redigitized
Vauquelinia californicaVauquelinia californica(Torr.) Sarg.Torrey vauqueliniaRosaceae40Little (1976); SEINet (2013) V. californica now includes what was previously considered as V. paucifloraremapped and merged two former species
Viburnum lentagoViburnum lentagoL.nannyberryCaprifoliaceae1730Little (1976, 1977)  redigitized
Viburnum nudumViburnum nudumL.possumhaw viburnumCaprifoliaceae885Little (1977)  redigitized
Viburnum obovatumViburnum obovatumWalterWalter viburnumCaprifoliaceae248Little (1977)  redigitized
Viburnum prunifoliumViburnum prunifoliumL.blackhawCaprifoliaceae1364Little (1977)  redigitized
Viburnum rufidulumViburnum rufidulumRaf.rusty blackhawCaprifoliaceae1824Little (1977)  redigitized
Viburnum trilobumViburnum opulus var. americanumAiton American cranberrybushCaprifoliaceae1937Little (1976, 1977)  redigitized
Viguiera stenolobaViguiera stenolobaS.F. BlakeresinbushAsteraceae106Benson and Darrow (1981)   new
Washingtonia filiferaWashingtonia filifera(Linden ex André) H. Wendl. ex de Bary California washingtoniaArecaceae2Little (1976)  redigitized
Ximenia americanaXimenia americanaL.tallowwoodXimeniaceae86Little (1978)  redigitized
Yucca aloifoliaYucca aloifoliaL.aloe yuccaAsparagaceae46Little (1977)  redigitized
Yucca angustissimaYucca angustissimaEngelm. ex Trel.narrowleaf yuccaAsparagaceae299eFloras (2013)  new
Yucca baccataYucca baccataTorr.banana yuccaAsparagaceae934Benson and Darrow (1981)  new
Yucca brevifoliaYucca brevifoliaEngelm.Joshua-treeAsparagaceae161Little (1976); Benson and Darrow (1981); Calflora (2013)  remapped
Yucca elataYucca elataEngelm.soaptree yuccaAsparagaceae293Little (1976)  redigitized
Yucca faxonianaYucca faxonianaSarg.Faxon yucca, Carneros yuccaAsparagaceae15Little (1976) Y. faxoniana now includes what was considered as Y. carnerosana in Little (1976)two species were merged
Yucca gloriosaYucca gloriosaL.moundlily yuccaAsparagaceae10Little (1977)  redigitized
Yucca mohavensisYucca schidigeraOrtgiesMohave yuccaAsparagaceae92Little (1976)  redigitized
Yucca schottiiYucca x schottiiEngelm. (pro. sp.)Schotts yuccaAsparagaceae12Little (1976)  redigitized
Yucca treculeanaYucca treculeanaCarrière Trecul yucca, Torrey yuccaAsparagaceae235Little (1976) Y. treculeana now includes what was considered as Y. torreyi in Little (1976)two species were merged
Zanthoxylum americanumZanthoxylum americanumMill.common prickly-ashRutaceae1470Little (1977)  redigitized
Zanthoxylum clava-herculisZanthoxylum clava-herculisL.Hercules-clubRutaceae545Little (1977)  redigitized
Zanthoxylum fagaraZanthoxylum fagara(L.) Sarg.lime prickly-ashRutaceae178Little (1977, 1978)  redigitized
Zanthoxylum hirsutumZanthoxylum hirsutumBuckleyTexas Hercules-clubRutaceae180Little (1977)  redigitized
Ziziphus parryiZiziphus parryiTorr.California lotebushRhamnaceae14Benson and Darrow (1981)  new


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