Clone of Digital Representations of Tree Species Range Maps from "Atlas of United States Trees" by Elbert L. Little, Jr. (and other publications)
The United States Geological Survey (USGS) hosted data from Little's "Atlas of United States Trees" until they were abruptly taken down in mid 2017. The data contained in this repository were sourced from the 27 January 2017 Internet Archive snapshot. There appears to be low likelihood that this legacy dataset will be restored per email coorespondence with the designated contact listed on the metadata file, Peter Schweitzer (USGS) on 29 August 2017:
We have discontinued serving the Elbert Little tree species maps. We refer queries by users the following sources for newer data:
https://www.fs.usda.gov/rds/archive/Product/RDS-2013-0013
https://www.fs.fed.us/nrs/atlas/littlefia/
Our decision to stop serving the Little maps was threefold: 1) because reorganization of our web space made it more difficult to continue hosting the maps; 2) it has been pointed out to me that there are digitizing errors in some of the shapefiles - I don't know which ones, and we don't have the resources or need, frankly, to correct them; and 3) we were made aware that the Forest Service is employing newer methodologies for quantifying and mapping tree species distribution, and we defer to them as experts in the field.
The data here have been minimally processed and organized to make them more readily useable than the Internet Archive's snapshot. The zipped shapefiles from the Internet Archive snapshot were unzipped and grouped into subfolders within the SHP/ directory following the original file naming convention. A geoJSON version is also provided for convenience in geojson/. The binomial names have not been updated. Some species codes deviate from the typical convention to avoid naming collisions or from what appear to be spelling errors. The table below flags these deviations.
PDFs of the range maps were not copied into this repo, but they may be found on the Internet Archive snapshot and through the US Forest Service Fire Effects Information System (note: the USFS has updated some scientific names).
SHP projection information (see Metadata.shtml for more information):
- Horizontal_Datum_Name: North American Datum of 1927
- Ellipsoid_Name: Clarke 1866
- Semi-major_Axis: 6378206.4
- Denominator_of_Flattening_Ratio: 294.98
- EPSG:4267 (https://epsg.io/4267)
These data are in the public domain. As works prepared by officers or employees of the federal government of the United States of America, they are not subject to copyright protection as described in 17 U.S.C. § 105. There are no restrictions on reuse, as noted in vegdist_faq.shtml.
The citations for the original publications are as follows:
- Critchfield, W.B., and Little, E.L., Jr., 1966, Geographic distribution of the pines of the world: U.S. Department of Agriculture Miscellaneous Publication 991, p. 1-97. link
- Little, E.L., Jr., 1971, Atlas of United States trees, volume 1, conifers and important hardwoods: U.S. Department of Agriculture Miscellaneous Publication 1146, 9 p., 200 maps. link
- Little, E.L., Jr., 1976, Atlas of United States trees, volume 3, minor Western hardwoods: U.S. Department of Agriculture Miscellaneous Publication 1314, 13 p., 290 maps. link
- Little, E.L., Jr., 1977, Atlas of United States trees, volume 4, minor Eastern hardwoods: U.S. Department of Agriculture Miscellaneous Publication 1342, 17 p., 230 maps. link
- Little, E.L., Jr. 1978, Atlas of United States trees, volume 5, Florida: U.S. Department of Agriculture Miscellaneous Publication 1361, 262 maps. link
The original publication and map numbers are available for each species within the metadata (metadata.shtml) or as a more user-friendly stand-alone table in Little_datatable.csv.
Users are encouraged to cite the publication(s) containing the data they are re-using.
Note that the pattern for filename is generally the first four letters of the genus and species epithet. In the case of name collisions and other deviations, the filename used in the original database is given with an asterisk (*).
| Species | SHP/ subfolder |
|---|---|
| Abies amabilis | abieamab |
| Abies balsamea | abiebals |
| Abies bracteata | abiebrac |
| Abies concolor | abieconc |
| Abies fraseri | abiefras |
| Abies grandis | abiegran |
| Abies lasiocarpa | abielasi |
| Abies magnifica | abiemagn |
| Abies procera | abieproc |
| Acacia berlandieri | acacberl |
| Acacia choriophylla | acacchor |
| Acacia farnesiana | acacfarn |
| Acacia greggii | acacgreg |
| Acacia macracantha | acacmacr |
| Acacia rigidula | acacrigi |
| Acacia roemeriana | acacroem |
| Acacia tortuosa | acactort |
| Acacia wrightii | acacwrig |
| Acer barbatum | acerbarb |
| Acer circinatum | acercirc |
| Acer glabrum | acerglab |
| Acer grandidentatum | acergran |
| Acer leucoderme | acerleuc |
| Acer macrophyllum | acermacr |
| Acer negundo | acernegu |
| Acer nigrum | acernigr |
| Acer pensylvanicum | acerpens |
| Acer rubrum | acerrubr |
| Acer saccharinum | acersacc |
| Acer saccharum | acersacr* |
| Acer spicatum | acerspic |
| Acoelorrhaphe wrightii | acoewrig |
| Aesculus californica | aesccali |
| Aesculus glabra | aescglab |
| Aesculus octandra | aescocta |
| Aesculus parviflora | aescparv |
| Aesculus pavia | aescpavi |
| Aesculus sylvatica | aescsylv |
| Agave utahensis | agavutah |
| Alnus maritima | alnumari |
| Alnus oblongifolia | alnuoblo |
| Alnus rhombifolia | alnurhom |
| Alnus rubra | alnurubr |
| Alnus rugosa | alnurugo |
| Alnus serrulata | alnuserr |
| Alnus sinuata | alnusinu |
| Alnus tenuifolia | alnutenu |
| Alvaradoa amorphoides | alvaamor |
| Amelanchier alnifolia | amelalni |
| Amelanchier arborea | amelarbo |
| Amelanchier interior | amelinte |
| Amelanchier sanguinea | amelsang |
| Amelanchier utahensis | amelutah |
| Amphitecna latifolia | amphlati |
| Amyris balsamifera | amyrbals |
| Amyris elemifera | amyrelem |
| Annona glabra | annoglab |
| Aralia spinosa | aralspin |
| Arbutus arizonica | arbuariz |
| Arbutus menziesii | arbumenz |
| Arbutus texana | arbutexa |
| Arctostaphylos pringlei | arctprin |
| Ardisia escallonioides | ardiesca |
| Artemisia tridentata | artetrid |
| Asimina parviflora | asimparv |
| Asimina triloba | asimtril |
| Avicennia germinans | avicgerm |
| Baccharis halimifolia | bacchali |
| Betula alleghaniensis | betualle |
| Betula lenta | betulent |
| Betula nana | betunana |
| Betula nigra | betunigr |
| Betula occidentalis | betuocci |
| Betula papyrifera | betupapy |
| Betula populifolia | betupopu |
| Betula uber | betuuber |
| Bourreria ovata | bourovat |
| Bourreria radula | bourradu |
| Bumelia celastrina | bumecela |
| Bumelia lanuginosa | bumelanu |
| Bumelia lycioides | bumelyci |
| Bumelia tenax | bumetena |
| Bursera fagaroides | bursfaga |
| Bursera microphylla | bursmicr |
| Bursera simaruba | burssima |
| Byrsonima lucida | byrsluci |
| Caesalpinia mexicana | caesmexi |
| Calyptranthes pallens | calypall |
| Calyptranthes zuzygium | calyzuzy |
| Canella winterana | canewint |
| Canotia holacantha | canoholo* |
| Capparis cynophallophora | cappcyno |
| Capparis flexuosa | cappflex |
| Carpinus caroliniana | carpcaro |
| Carya aquatica | caryaqua |
| Carya cordiformis | carycord |
| Carya floridana | caryflor |
| Carya glabra | caryglab |
| Carya illinoensis | caryilli |
| Carya laciniosa | carylaci |
| Carya myristicaeformis | carymyri |
| Carya ovata | caryovat |
| Carya pallida | carypall |
| Carya texana | carytexa |
| Carya tomentosa | carytome |
| Castanea alnifolia | castalni |
| Castanopsis chrysophylla | castchry |
| Castanea dentata | castdent |
| Castanea ozarkensis | castozar |
| Castanea pumila | castpumi |
| Catalpa bignonioides | catabign |
| Catalpa speciosa | cataspec |
| Ceanothus arboreus | ceanarbo |
| Ceanothus spinosus | ceanspin |
| Ceanothus thyrsiflorus | ceanthyr |
| Celtis laevigata | celtlaev |
| Celtis lindheimeri | celtlind |
| Celtis occidentalis | celtocci |
| Celtis reticulata | celtreti |
| Celtis tenuifolia | celttenu |
| Cephalanthus occidentalis | cephocci |
| Cercocarpus betuloides | cercbetu |
| Cercocarpus breviflorus | cercbrev |
| Cercis canadensis | cerccana |
| Cercidium floridum | cercflor |
| Cercocarpus ledifolius | cercledi |
| Cercidium macrum | cercmacr |
| Cercidium microphyllum | cercmicr |
| Cercis occidentalis | cercocci |
| Cercocarpus traskiae | cerctras |
| Cereus giganteus | ceregiga |
| Cereus robinii | cererobi |
| Chamaecyparis lawsoniana | chamlaws |
| Chamaecyparis nootkatensis | chamnoot |
| Chamaecyparis thyoides | chamthyo |
| Chilopsis linearis | chilline |
| Chionanthus virginicus | chiovirg |
| Chrysobalanus icaco | chryicac |
| Chrysophyllum oliviforme | chryoliv |
| Citharexylum berlandieri | cithberl |
| Citharexylum fruticosum | cithfrut |
| Cladrastis kentukea | cladkent |
| Clethra acuminata | cletacum |
| Cliftonia monophylla | clifmono |
| Clusia rosea | clusrose |
| Coccothrinax argentata | coccarge |
| Coccoloba diversifolia | coccdive |
| Coccoloba uvifera | coccuvif |
| Colubrina arborescens | coluarbo |
| Colubrina cubensis | colucube |
| Colubrina elliptica | coluelli |
| Condalia globosa | condglob |
| Condalia hookeri | condhook |
| Conocarpus erectus | conoerec |
| Cordia boissieri | cordbois |
| Cordia sebestena | cordsebe |
| Cornus alternifolia | cornalte |
| Cornus drummondii | corndrum |
| Cornus florida | cornflor |
| Cornus glabrata | cornglab |
| Cornus nuttallii | cornnutt |
| Cornus occidentalis | cornocci |
| Cornus racemosa | cornrace |
| Cornus rugosa | cornrugo |
| Cornus sessilis | cornsess |
| Cornus stolonifera | cornstol |
| Cornus stricta | cornstri |
| Corylus cornuta | corycorn |
| Cotinus obovatus | cotiobov |
| Cowania mexicana | cowamexi |
| Crataegus chrysocarpa | cratchry |
| Crataegus columbiana | cratcolu |
| Crataegus douglasii | cratdoug |
| Crataegus erythropoda | crateryt |
| Crataegus saligna | cratsali |
| Crataegus succulenta | cratsucc |
| Crataegus tracyi | crattrac |
| Crossopetalum rhacoma | crosrhac |
| Cupania glabra | cupaglab |
| Cupressus arizonica | cuprariz |
| Cupressus bakeri | cuprbake |
| Cupressus goveniana | cuprgove |
| Cupressus guadalupensis | cuprguad |
| Cupressus macnabiana | cuprmacn |
| Cupressus macrocarpa | cuprmacr |
| Cupressus sargentii | cuprsarg |
| Cyrilla racemiflora | cyrirace |
| Dalea spinosa | dalespin |
| Diospyros texana | diostexa |
| Diospyros virginiana | diosvirg |
| Dipholis salicifolia | diphsali |
| Dodonaea viscosa | dodovisc |
| Drypetes diversifolia | drypdive |
| Drypetes lateriflora | dryplate |
| Ehretia anacua | ehreanac |
| Elliottia racemosa | ellirace |
| Erythrina flabelliformis | erytflab |
| Erythrina herbacea | erytherb |
| Esenbeckia berlandieri | esenberl |
| Eugenia axillaris | eugeaxil |
| Eugenia confusa | eugeconf |
| Eugenia foetida | eugefoet |
| Eugenia rhombea | eugerhom |
| Euonymus atropurpureus | euonatro |
| Euonymus occidentalis | euonocci |
| Exostema caribaeum | exoscari |
| Exothea paniculata | exotpani |
| Eysenhardtia polystachya | eysepoly |
| Eysenhardtia texana | eysetexa |
| Fagus grandifolia | fagugran |
| Ficus aurea | ficuaure |
| Ficus citrifolia | ficucitr |
| Forestiera acuminata | foreacum |
| Forestiera angustifolia | foreangu |
| Forestiera phillyreoides | forephil |
| Forestiera segregata | foresegr |
| Franklinia alatamaha | franalat |
| Fraxinus americana | fraxamer |
| Fraxinus anomala | fraxanom |
| Fraxinus berlandieriana | fraxberl |
| Fraxinus caroliniana | fraxcaro |
| Fraxinus cuspidata | fraxcusp |
| Fraxinus dipetala | fraxdipe |
| Fraxinus gooddingii | fraxgood |
| Fraxinus greggii | fraxgreg |
| Fraxinus latifolia | fraxlati |
| Fraxinus nigra | fraxnigr |
| Fraxinus papillosa | fraxpapi |
| Fraxinus pennsylvanica | fraxpenn |
| Fraxinus profunda | fraxprof |
| Fraxinus quadrangulata | fraxquad |
| Fraxinus texensis | fraxtexe |
| Fraxinus velutina | fraxvelu |
| Fremontodendron californicum | fremcali |
| Fremontodendron mexicanum | fremmexi |
| Garrya elliptica | garrelli |
| Genipa clusiifolia | geniclus |
| Gleditsia aquatica | gledaqua |
| Gleditsia triacanthos | gledtria |
| Gordonia lasianthus | gordlasi |
| Guaiacum angustifolium | guaiangu |
| Guaiacum sanctum | guaisanc |
| Guapira discolor | guapdisc |
| Guettarda elliptica | guetelli |
| Guettarda scabra | guetscab |
| Gyminda latifolia | gymilati |
| Gymnocladus dioicus | gymndioi |
| Gymnanthes lucida | gymnluci |
| Halesia carolina | halecaro |
| Halesia diptera | haledipt |
| Halesia parviflora | haleparv |
| Hamamelis virginiana | hamavirg |
| Hamelia patens | hamepate |
| Helietta parvifolia | heliparv |
| Hippomane mancinella | hippmanc |
| Holacantha emoryi | holaemor |
| Hypelate trifoliata | hypetrif |
| Ilex ambigua | ilexambi |
| Ilex amelanchier | ilexamel |
| Ilex cassine | ilexcass |
| Ilex coriacea | ilexcori |
| Ilex decidua | ilexdeci |
| Ilex krugiana | ilexkrug |
| Ilex laevigata | ilexlaev |
| Ilex longipes | ilexlong |
| Ilex montana | ilexmont |
| Ilex myrtifolia | ilexmyrt |
| Ilex opaca | ilexopac |
| Ilex verticillata | ilexvert |
| Ilex vomitoria | ilexvomi |
| Illicium floridanum | illiflor |
| Illicium parviflorum | illiparv |
| Jacquinia keyensis | jacqkeye |
| Juglans californica | juglcali |
| Juglans cinerea | juglcine |
| Juglans hindsii | juglhind |
| Juglans major | juglmajo |
| Juglans microcarpa | juglmicr |
| Juglans nigra | juglnigr |
| Juniperus ashei | juniashe |
| Juniperus californica | junicali |
| Juniperus communis | junicomm |
| Juniperus deppeana | junidepp |
| Juniperus erythrocarpa | junieryt |
| Juniperus flaccida | juniflac |
| Juniperus horizontalis | junihori |
| Juniperus monosperma | junimono |
| Juniperus occidentalis | juniocci |
| Juniperus osteosperma | junioste |
| Juniperus pinchotii | junipinc |
| Juniperus scopulorum | juniscop |
| Juniperus silicicola | junisili |
| Juniperus virginiana | junivirg |
| Kalmia latifolia | kalmlati |
| Koeberlinia spinosa | koebspin |
| Krugiodendron ferreum | krugferr |
| Laguncularia racemosa | lagurace |
| Larix laricina | larilari |
| Larix lyallii | larilyal |
| Larix occidentalis | lariocci |
| Larrea divaricata | larrdiva |
| Leitneria floridana | leitflor |
| Leucaena pulverulenta | leucpulv |
| Leucaena retusa | leucretu |
| Libocedrus decurrens | libodecu |
| Licaria triandra | licatria |
| Liquidambar styraciflua | liqustyr |
| Liriodendron tulipifera | lirituli |
| Lithocarpus densiflorus | lithdens |
| Lyonia ferruginea | lyonferr |
| Lyonothamnus floribundus | lyonflor |
| Lysiloma latisiliquum | lysilati |
| Lysiloma microphylla | lysimicr |
| Maclura pomifera | maclpomi |
| Magnolia acuminata | magnacum |
| Magnolia ashei | magnashe |
| Magnolia fraseri | magnfras |
| Magnolia grandiflora | magngran |
| Magnolia macrophylla | magnmacr |
| Magnolia pyramidata | magnpyra |
| Magnolia tripetala | magntrip |
| Magnolia virginiana | magnvirg |
| Malus angustifolia | maluangu |
| Malus coronaria | malucoro |
| Malus diversifolia | maludive |
| Malus ioensis | maluioen |
| Manilkara bahamensis | manibaha |
| Mastichodendron foetidissimum | mastfoet |
| Maytenus phyllanthoides | maytphyl |
| Metopium toxiferum | metotoxi |
| Morus microphylla | morumicr |
| Morus rubra | morurubr |
| Myrcianthes fragrans | myrcfrag |
| Myrica californica | myricali |
| Myrica cerifera | myriceri |
| Myrica heterophylla | myrihete |
| Myrica inodora | myriinod |
| Myrica pensylvanica | myripens |
| Nectandra coriacea | nectcori |
| Nemopanthus collinus | nemocoll |
| Nolina bigelovii | nolibige |
| Nyssa aquatica | nyssaqua |
| Nyssa ogeche | nyssogec |
| Nyssa sylvatica | nysssylv |
| Olneya tesota | olneteso |
| Opuntia fulgida | opunfulg |
| Osmanthus americanus | osmaamer |
| Ostrya chisosensis | ostrchis |
| Ostrya knowltonii | ostrknow |
| Ostrya virginiana | ostrvirg |
| Oxydendrum arboreum | oxydarbo |
| Parkinsonia aculeata | parkacul |
| Persea borbonia | persborb |
| Photinia arbutifolia | photarbu |
| Picea breweriana | picebrew |
| Picea chihuahuana | picechih |
| Picea engelmannii | piceenge |
| Picea glauca | piceglau |
| Picea mariana | picemari |
| Picea pungens | picepung |
| Picea rubens | picerube |
| Picea sitchensis | picesitc |
| Picramnia pentandra | picrpent |
| Pinckneya pubens | pincpube |
| Pinus albicaulis | pinualbi |
| Pinus aristata | pinuaris |
| Pinus attenuata | pinuatte |
| Pinus ayacahuite | pinuayac |
| Pinus balfouriana | pinubalf |
| Pinus banksiana | pinubank |
| Pinus caribaea | pinucari |
| Pinus cembroides | pinucemb |
| Pinus clausa | pinuclau |
| Pinus contorta | pinucont |
| Pinus cooperi | pinucoop |
| Pinus coulteri | pinucoul |
| Pinus cubensis | pinucube |
| Pinus culminicola | pinuculm |
| Pinus douglasiana | pinudoug |
| Pinus durangensis | pinudura |
| Pinus echinata | pinuechi |
| Pinus edulis | pinuedul |
| Pinus elliottii | pinuelli |
| Pinus engelmannii | pinuenge |
| Pinus flexilis | pinuflex |
| Pinus glabra | pinuglab |
| Pinus greggii | pinugreg |
| Pinus hartwegii | pinuhart |
| Pinus jeffreyi | pinujeff |
| Pinus lambertiana | pinulamb |
| Pinus lawsonii | pinulaws |
| Pinus leiophylla | pinuleio |
| Pinus longaeva | pinulong |
| Pinus lumholtzii | pinulumh |
| Pinus maximartinezii | pinumaxi |
| Pinus michoacana | pinumich |
| Pinus monophylla | pinumono |
| Pinus monticola | pinumont |
| Pinus montezumae | pinumtez* |
| Pinus muricata | pinumuri |
| Pinus nelsonii | pinunels |
| Pinus occidentalis | pinuocci |
| Pinus oocarpa | pinuooca |
| Pinus palustris | pinupalu |
| Pinus patula | pinupatu |
| Pinus pinceana | pinupinc |
| Pinus ponderosa | pinupond |
| Pinus pringlei | pinuprin |
| Pinus pseudostrobus | pinupseu |
| Pinus pungens | pinupung |
| Pinus quadrifolia | pinuquad |
| Pinus radiata | pinuradi |
| Pinus resinosa | pinuresi |
| Pinus rigida | pinurigi |
| Pinus sabiniana | pinusabi |
| Pinus serotina | pinusero |
| Pinus strobus | pinustrb* |
| Pinus strobiformis | pinustro |
| Pinus taeda | pinutaed |
| Pinus teocote | pinuteoc |
| Pinus torreyana | pinutorr |
| Pinus tropicalis | pinutrop |
| Pinus virginiana | pinuvirg |
| Pinus washoensis | pinuwash |
| Piscidia piscipula | piscpisc |
| Pisonia rotundata | pisorotu |
| Pistacia texana | pisttexa |
| Pithecellobium flexicaule | pithflex |
| Pithecellobium guadalupense | pithguad |
| Pithecellobium pallens | pithpall |
| Pithecellobium unguis-cati | pithungu |
| Planera aquatica | planaqua |
| Platanus occidentalis | platocci |
| Platanus racemosa | platrace |
| Platanus wrightii | platwrig |
| Populus angustifolia | popuangu |
| Populus arizonica | popuariz |
| Populus balsamifera | popubals |
| Populus deltoides | popudelt |
| Populus fremontii | popufrem |
| Populus grandidentata | popugran |
| Populus heterophylla | popuhete |
| Populus hinckleyana | popuhinc |
| Populus tremuloides | poputrem |
| Populus trichocarpa | poputric |
| Prosopis juliflora | prosjuli |
| Prosopis pubescens | prospube |
| Prunus alleghaniensis | prunalle |
| Prunus americana | prunamer |
| Prunus angustifolia | prunangu |
| Prunus caroliniana | pruncaro |
| Prunus emarginata | prunemar |
| Prunus fremontii | prunfrem |
| Prunus hortulana | prunhort |
| Prunus ilicifolia | prunilic |
| Prunus lyonii | prunlyon |
| Prunus mexicana | prunmexi |
| Prunus munsoniana | prunmuns |
| Prunus myrtifolia | prunmyrt |
| Prunus nigra | prunnigr |
| Prunus pensylvanica | prunpens |
| Prunus serotina | prunsero |
| Prunus subcordata | prunsubc |
| Prunus umbellata | prunumbe |
| Prunus virginiana | prunvirg |
| Pseudotsuga macrocarpa | pseumacr |
| Pseudotsuga menziesii | pseumenz |
| Pseudophoenix sargentii | pseusarg |
| Psidium longipes | psidlong |
| Ptelea crenulata | ptelcren |
| Ptelea trifoliata | pteltrif |
| Quercus agrifolia | queragri |
| Quercus ajoensis | querajoe |
| Quercus alba | queralba |
| Quercus arizonica | querariz |
| Quercus arkansana | querarka |
| Quercus bicolor | querbico |
| Quercus chapmanii | querchap |
| Quercus chrysolepis | querchry |
| Quercus coccinea | quercocc |
| Quercus douglasii | querdoug |
| Quercus dunnii | querdunn |
| Quercus durandii | querdura |
| Quercus ellipsoidalis | querelli |
| Quercus emoryi | queremor |
| Quercus engelmannii | querenge |
| Quercus falcata | querfalc |
| Quercus gambelii | quergamb |
| Quercus garryana | quergarr |
| Quercus georgiana | quergeor |
| Quercus glaucoides | querglau |
| Quercus graciliformis | quergrac |
| Quercus gravesii | quergrav |
| Quercus grisea | quergris |
| Quercus havardii | querhava |
| Quercus hypoleucoides | querhypo |
| Quercus ilicifolia | querilic |
| Quercus imbricaria | querimbr |
| Quercus incana | querinca |
| Quercus kelloggii | querkell |
| Quercus laevis | querlaev |
| Quercus laurifolia | querlaur |
| Quercus lobata | querloba |
| Quercus lyrata | querlyra |
| Quercus macdonaldii | quermacd |
| Quercus macrocarpa | quermacr |
| Quercus marilandica | quermari |
| Quercus michauxii | quermich |
| Quercus mohriana | quermohr |
| Quercus muehlenbergii | quermueh |
| Quercus myrtifolia | quermyrt |
| Quercus nigra | quernigr |
| Quercus nuttallii | quernutt |
| Quercus oblongifolia | queroblo |
| Quercus oglethorpensis | querogle |
| Quercus palustris | querpalu |
| Quercus phellos | querphel |
| Quercus prinus | querprin |
| Quercus pungens | querpung |
| Quercus rubra | querrubr |
| Quercus rugosa | querrugo |
| Quercus shumardii | quershum |
| Quercus stellata | querstel |
| Quercus tomentella | quertome |
| Quercus toumeyi | quertoum |
| Quercus turbinella | querturb |
| Quercus velutina | quervelu |
| Quercus virginiana | quervirg |
| Quercus wislizeni | querwisl |
| Rapanea punctata | rapapunc |
| Reynosia septentrionalis | reynsept |
| Rhamnus betulaefolia | rhambetu |
| Rhamnus californica | rhamcali |
| Rhamnus caroliniana | rhamcaro |
| Rhamnus crocea | rhamcroc |
| Rhamnus purshiana | rhampurs |
| Rhizophora mangle | rhizmang |
| Rhododendron catawbiense | rhodcata |
| Rhododendron macrophyllum | rhodmacr |
| Rhododendron maximum | rhodmaxi |
| Rhus choriophylla | rhuschor |
| Rhus copallina | rhuscopa |
| Rhus glabra | rhusglab |
| Rhus integrifolia | rhusinte |
| Rhus kearneyi | rhuskear |
| Rhus lanceolata | rhuslanc |
| Rhus laurina | rhuslaur |
| Rhus microphylla | rhusmicr |
| Rhus ovata | rhusovat |
| Rhus typhina | rhustyph |
| Robinia kelseyi | robikels |
| Robinia neomexicana | robineom |
| Robinia pseudoacacia | robipseu |
| Robinia viscosa | robivisc |
| Roystonea elata | royselat |
| Sabal mexicana | sabamexi |
| Sabal minor | sabamino |
| Sabal palmetto | sabapalm |
| Salix alaxensis | salialax |
| Salix amygdaloides | saliamyg |
| Salix arbusculoides | saliarbu |
| Salix bebbiana | salibebb |
| Salix bonplandiana | salibonp |
| Salix caroliniana | salicaro |
| Salix discolor | salidisc |
| Salix exigua | saliexig |
| Salix floridana | saliflor |
| Salix fluviatilis | salifluv |
| Salix geyeriana | saligeye |
| Salix hindsiana | salihind |
| Salix hookeriana | salihook |
| Salix laevigata | salilaev |
| Salix lasiandra | salilasi |
| Salix lasiolepis | salilaso* |
| Salix lucida | saliluci |
| Salix mackenzieana | salimack |
| Salix nigra | salinigr |
| Salix pellita | salipell |
| Salix petiolaris | salipeti |
| Salix pyrifolia | salipyri |
| Salix scouleriana | saliscou |
| Salix sericea | saliseri |
| Salix sessilifolia | salisess |
| Salix sitchensis | salisitc |
| Salix taxifolia | salitaxi |
| Salix tracyi | salitrac |
| Sambucus callicarpa | sambcall |
| Sambucus canadensis | sambcana |
| Sambucus glauca | sambglau |
| Sambucus melanocarpa | sambmela |
| Sambucus mexicana | sambmexi |
| Sambucus velutina | sambvelu |
| Sapium biloculare | sapibilo |
| Sapindus drummondii | sapidrum |
| Sapindus saponaria | sapisapo |
| Sassafras albidum | sassalbi |
| Savia bahamensis | savibaha |
| Schaefferia frutescens | schafrut |
| Schoepfia chrysophylloides | schochry |
| Sequoiadendron giganteum | sequgiga |
| Sequoia sempervirens | sequsemp |
| Serenoa repens | sererepe |
| Shepherdia argentea | sheparge |
| Simarouba glauca | simaglau |
| Solanum erianthum | solaeria |
| Sophora affinis | sophaffi |
| Sophora secundiflora | sophsecu |
| Sorbus americana | sorbamer |
| Sorbus decora | sorbdeco |
| Sorbus scopulina | sorbscop |
| Sorbus sitchensis | sorbsitc |
| Staphylea bolanderi | stapbola |
| Staphylea trifolia | staptrif |
| Stewartia malacodendron | stewmala |
| Stewartia ovata | stewovat |
| Styrax americana | styramer |
| Styrax grandifolia | styrgran |
| Styrax platanifolia | styrplat |
| Suriana maritima | surimari |
| Swietenia mahagoni | swiemaha |
| Symplocos tinctoria | symptinc |
| Taxodium distichum | taxodist |
| Taxodium mucronatum | taxomucr |
| Taxus brevifolia | taxubrev |
| Taxus canadensis | taxucana |
| Taxus floridana | taxuflor |
| Tetrazygia bicolor | tetrbico |
| Thrinax morrisii | thrimorr |
| Thrinax radiata | thriradi |
| Thuja occidentalis | thujocci |
| Thuja plicata | thujplic |
| Tilia americana | tiliamer |
| Tilia caroliniana | tilicaro |
| Tilia heterophylla | tilihete |
| Torreya californica | torrcali |
| Torreya taxifolia | torrtaxi |
| Toxicodendron vernix | toxivern |
| Trema lamarckiana | tremlama |
| Trema micrantha | tremmicr |
| Tsuga canadensis | tsugcana |
| Tsuga caroliniana | tsugcaro |
| Tsuga heterophylla | tsughete |
| Tsuga mertensiana | tsugmert |
| Ulmus alata | ulmualat |
| Ulmus americana | ulmuamer |
| Ulmus crassifolia | ulmucras |
| Ulmus rubra | ulmurubr |
| Ulmus serotina | ulmusero |
| Ulmus thomasii | ulmuthom |
| Umbellularia californica | umbecali |
| Ungnadia speciosa | ungnspec |
| Vaccinium arboreum | vaccarbo |
| Vauquelinia californica | vauqcali |
| Vauquelinia pauciflora | vauqpauc |
| Viburnum lentago | vibulent |
| Viburnum nudum | vibunudu |
| Viburnum obovatum | vibuobov |
| Viburnum prunifolium | vibuprun |
| Viburnum rufidulum | viburufi |
| Viburnum trilobum | vibutril |
| Washingtonia filifera | washfili |
| Ximenia americana | ximeamer |
| Yucca aloifolia | yuccaloi |
| Yucca brevifolia | yuccbrev |
| Yucca carnerosana | yucccarn |
| Yucca elata | yuccelat |
| Yucca faxoniana | yuccfaxo |
| Yucca gloriosa | yuccglor |
| Yucca mohavensis | yuccmoha |
| Yucca rostrata | yuccrost |
| Yucca schottii | yuccscho |
| Yucca torreyi | yucctorr |
| Yucca treculeana | yucctrec |
| Zanthoxylum americanum | zantamer |
| Zanthoxylum clava-herculis | zantclav |
| Zanthoxylum coriaceum | zantcori |
| Zanthoxylum fagara | zantfaga |
| Zanthoxylum flavum | zantflav |
| Zanthoxylum hirsutum | zanthirs |