| Common Name | Scientific Name | Code |
| n/a | Abies balsamea (L.) P. Mill. var. phanerolepis Fern. | ABBAP |
| n/a | Cedrus libani A. Rich. [excluded] | CELI6 |
| n/a | Picea ?lutzii Little [glauca ? sitchensis] | PILU |
| n/a | Picea engelmannii Parry ex Engelm. var. mexicana (Marti?ez) Silba | PIENM2 |
| n/a | Pinus ?attenuradiata Stockwell & Righter [attenuata ? radiata] | PIAT2 |
| n/a | Pinus ?sondereggeri H.H. Chapman [palustris ? taeda] | PISO |
| n/a | Pinus greggii Engelm. ex Parl. | PIGR8 |
| n/a | Pinus kochiana (K. Koch) Klotzsch | PIKO3 |
| n/a | Pinus stankewiczii (Sukaczev) Fomin | PIST5 |
| n/a | Tsuga ?jeffreyi (Henry) Henry [heterophylla ? mertensiana] | TSJE |
| Abies ?shastensis | Abies magnifica A. Murr. var. shastensis Lemmon | ABMAS |
| Abies balsamea var. balsamea | Pinus balsamea L. | PIBA3 |
| Abies balsamea var. phanerolepis | Abies ?phanerolepis (Fern.) Liu | ABPH |
| Abies bracteata | Abies venusta (Dougl.) K. Koch | ABVE |
| Abies concolor var. lowiana | Abies lowiana (Gord. & Glend.) A. Murr. | ABLO |
| Abies fraseri | Pinus fraseri Pursh | PIFR |
| Abies grandis | Abies grandis (Dougl. ex D. Don) Lindl. var. grandis (Dougl. ex D. Don) Lindl. [superfluous autonym] | ABGRG |
| Abies grandis | Abies grandis (Dougl. ex D. Don) Lindl. var. idahoensis Silba | ABGRI |
| Abies lasiocarpa var. arizonica | Abies arizonica Merriam | ABAR2 |
| Abies lasiocarpa var. lasiocarpa | Abies balsamea (L.) P. Mill. ssp. lasiocarpa (Hook.) Boivin | ABBAL |
| Abies lasiocarpa var. lasiocarpa | Abies balsamea (L.) P. Mill. var. fallax (Engelm.) Boivin | ABBAF |
| Abies lasiocarpa var. lasiocarpa | Abies bifolia A. Murr. | ABBI3 |
| Abies lasiocarpa var. lasiocarpa | Abies subalpina Engelmann | ABSU |
| Abies magnifica | Abies magnifica A. Murray bis var. magnifica A. Murray bis [superfluous autonym] | ABMAM |
| Abies procera | Abies nobilis (Dougl. ex D. Don) Lindl. | ABNO |
| Afghan pine | Pinus brutia Ten. var. eldarica (Medw.) Silba | PIBRE |
| aleppo pine | Pinus halepensis P. Mill. | PIHA7 |
| Apache pine | Pinus engelmannii Carr. | PIEN2 |
| Arizona pine | Pinus arizonica Engelm. | PIAR5 |
| Arizona pine | Pinus arizonica Engelm. var. arizonica | PIARA |
| Arizona pine | Pinus arizonica Engelm. var. stormiae Marti?ez | PIARS2 |
| Armand pine | Pinus armandii Franch. | PIAR7 |
| Austrian pine | Pinus nigra Arnold | PINI |
| Balkan pine | Pinus peuce Griseb. | PIPE9 |
| balsam fir | Abies balsamea (L.) P. Mill. | ABBA |
| balsam fir | Abies balsamea (L.) P. Mill. var. balsamea | ABBAB |
| beach pine | Pinus contorta Dougl. ex Loud. var. contorta | PICOC |
| Bhutan pine | Pinus wallichiana A.J. Jackson | PIWA3 |
| bigcone Douglas-fir | Pseudotsuga macrocarpa (Vasey) Mayr | PSMA |
| Bishop pine | Pinus muricata D. Don | PIMU |
| black spruce | Picea mariana (P. Mill.) B.S.P. | PIMA |
| black spruce | Picea mariana (P. Mill.) B.S.P. var. mariana | PIMAM4 |
| blue spruce | Picea pungens Engelm. | PIPU |
| Bolander beach pine | Pinus contorta Dougl. ex Loud. var. bolanderi (Parl.) Vasey | PICOB |
| border pinyon | Pinus discolor D.K. Bailey & Hawksworth | PIDI3 |
| Bosnian pine | Pinus leucodermis Antoine | PILE6 |
| Brewer spruce | Picea breweriana S. Wats. | PIBR |
| bristlecone fir | Abies bracteata (D. Don) D. Don ex Poit. | ABBR |
| bristlecone pine | Pinus aristata Engelm. | PIAR |
| Bunge's pine | Pinus bungeana Zucc. ex Endl. | PIBU2 |
| Calabrian pine | Pinus brutia Tenore | PIBR9 |
| California foothill pine | Pinus sabiniana Dougl. ex Dougl. | PISA2 |
| California pine | Pinus monophylla Torr. & Fr?m. var. californiarum (Bailey) Silba | PIMOC |
| California red fir | Abies magnifica A. Murr. | ABMA |
| Canary Island pine | Pinus canariensis C. Smith | PICA15 |
| Caribbean pine | Pinus caribaea Morelet | PICA18 |
| Carolina hemlock | Tsuga caroliniana Engelm. | TSCA2 |
| cedar | Cedrus Trew | CEDRU |
| Chihuahuan pine | Pinus leiophylla Schiede & Deppe | PILE |
| Chihuahuan pine | Pinus leiophylla Schiede & Deppe var. chihuahuana (Engelm.) Shaw | PILEC |
| chilghoza pine | Pinus gerardiana Wall. ex D. Don | PIGE2 |
| Chinese golden-larch | Pseudolarix amabilis (J. Nelson) Rehder | PSAM4 |
| Chinese pinenut | Pinus koraiensis Siebold & Zucc. | PIKO2 |
| Chinese red pine | Pinus massoniana Lamb. | PIMA11 |
| Christmastree | Abies veitchii Lindl. | ABVE2 |
| corkbark fir | Abies lasiocarpa (Hook.) Nutt. var. arizonica (Merriam) Lemmon | ABLAA |
| Corsican pine | Pinus nigra Arnold ssp. laricio Maire | PINIL2 |
| Coulter pine | Pinus coulteri D. Don | PICO3 |
| Crimean pine | Pinus nigra Arnold ssp. pallasiana (Lamb.) Holmboe | PINIP |
| Dahurian larch | Larix gmelinii (Rupr.) Rupr. | LAGM3 |
| Deodar cedar | Cedrus deodara (Roxb.) G. Don f. | CEDE2 |
| Douglas-fir | Pseudotsuga Carr. | PSEUD7 |
| Douglas-fir | Pseudotsuga menziesii (Mirbel) Franco | PSME |
| Douglas-fir | Pseudotsuga menziesii (Mirbel) Franco var. menziesii | PSMEM |
| Dunkeld larch | Larix ?marschlinsii Coaz | LAMA16 |
| dwarf mountain pine | Pinus mugo Turra var. pumilio (Haenke) Zenari | PIMUP2 |
| dwarf Siberian pine | Pinus pumila (Pall.) Regel | PIPU6 |
| eastern hemlock | Tsuga canadensis (L.) Carr. | TSCA |
| eastern white pine | Pinus strobus L. | PIST |
| Engelmann spruce | Picea engelmannii Parry ex Engelm. | PIEN |
| Engelmann spruce | Picea engelmannii Parry ex Engelm. var. engelmannii | PIENE |
| European larch | Larix decidua P. Mill. | LADE2 |
| Evelyn keteleeria | Keteleeria evelyniana Mast. | KEEV |
| fir | Abies P. Mill. | ABIES |
| five-needle pine | Pinus parviflora Siebold & Zucc. | PIPA12 |
| Florida slash pine | Pinus elliottii Engelm. var. densa Little & Dorman | PIELD |
| foxtail pine | Pinus balfouriana Grev. & Balf. | PIBA |
| foxtail pine | Pinus balfouriana Grev. & Balf. ssp. austrina R.J. & J.D. Mastrogiuseppe | PIBAA |
| foxtail pine | Pinus balfouriana Grev. & Balf. ssp. balfouriana | PIBAB |
| Fraser fir | Abies fraseri (Pursh) Poir. | ABFR |
| golden larch | Pseudolarix Gordon, nom. cons. | PSEUD47 |
| golden larch | Pseudolarix kaempferi (Lamb.) Gordon | PSKA2 |
| grand fir | Abies grandis (Dougl. ex D. Don) Lindl. | ABGR |
| Great Basin bristlecone pine | Pinus longaeva D.K. Bailey | PILO |
| hemlock | Tsuga Carr. | TSUGA |
| Honduras pine | Pinus elliottii Engelm. var. elliottii | PIELE2 |
| Italian stone pine | Pinus pinea L. | PIPI7 |
| jack pine | Pinus banksiana Lamb. | PIBA2 |
| Japanese black pine | Pinus thunbergii Parl. | PITH2 |
| Japanese larch | Larix kaempferi (Lam.) Carr. | LAKA2 |
| Japanese red pine | Pinus densiflora Siebold & Zucc. | PIDE5 |
| Jeffrey pine | Pinus jeffreyi Grev. & Balf. | PIJE |
| Johannis pine | Pinus johannis M.F. Robert | PIJO |
| keteleeria | Keteleeria Carri?re | KETEL |
| knobcone pine | Pinus attenuata Lemmon | PIAT |
| Kurile larch | Larix gmelinii (Rupr.) Rupr. var. japonica (Maxim. ex Regel) Pilg. | LAGMJ |
| larch | Larix P. Mill. | LARIX |
| Larix kaempferi | Larix leptolepis (Siebold & Zucc.) Gordon | LALE6 |
| Larix laricina | Larix alaskensis W. Wight | LAAL6 |
| Larix laricina | Larix laricina (Du Roi) K. Koch var. alaskensis (W. Wight) Raup | LALAA5 |
| limber pine | Pinus flexilis James | PIFL2 |
| loblolly pine | Pinus taeda L. | PITA |
| lodgepole pine | Pinus contorta Dougl. ex Loud. | PICO |
| lodgepole pine | Pinus contorta Dougl. ex Loud. var. latifolia Engelm. ex S. Wats. | PICOL |
| longleaf pine | Pinus palustris P. Mill. | PIPA2 |
| maritime pine | Pinus pinaster Ait. | PIPI6 |
| maxipi?on | Pinus maximartinezii Rzed. | PIMA14 |
| Merkus pine | Pinus merkusii Junghuhn & Vriese ex Vriese | PIME2 |
| Mexican pinyon | Pinus cembroides Zucc. | PICE |
| Mexican weeping pine | Pinus patula Schiede ex Schlecht. & Cham. | PIPA13 |
| Monterey pine | Pinus radiata D. Don | PIRA2 |
| morinda spruce | Picea smithiana (Wall.) Boiss. | PISM |
| mountain hemlock | Tsuga mertensiana (Bong.) Carr. | TSME |
| mountain pine | Pinus uncinata Mill. ex Mirb. | PIUN4 |
| mugo pine | Pinus mugo Turra | PIMU80 |
| Nikko fir | Abies homolepis Sieb. and Zucc. | ABHO |
| noble fir | Abies procera Rehd. | ABPR |
| Norway spruce | Picea abies (L.) Karst. | PIAB |
| ocote chino | Pinus oocarpa Schiede ex Schltdl. | PIOO2 |
| Pacific silver fir | Abies amabilis (Dougl. ex Loud.) Dougl. ex Forbes | ABAM |
| papershell pinyon | Pinus remota (Little) D.K. Bailey & Hawksworth | PIRE5 |
| Parry pinyon | Pinus quadrifolia Parl. ex Sudworth | PIQU |
| Picea abies | Picea excelsa (Lamb.) Link | PIEX2 |
| Picea engelmannii var. engelmannii | Picea glauca (Moench) Voss ssp. engelmannii (Parry ex Engelm.) T.M.C. Taylor | PIGLE |
| Picea engelmannii var. engelmannii | Picea glauca (Moench) Voss var. engelmannii (Parry ex Engelm.) Boivin | PIGLE2 |
| Picea engelmannii var. mexicana | Picea engelmannii (Marti?ez) Taylor & Patterson nom. illeg. | PIEN3 |
| Picea engelmannii var. mexicana | Picea engelmannii (Marti?ez) Taylor & Patterson ssp. mexicana (Marti?ez) P. Schmit | PIENM |
| Picea glauca | Picea canadensis (P. Mill.) B.S.P. | PICA10 |
| Picea glauca | Picea glauca (Moench) Voss var. albertiana (S. Br.) Sarg. | PIGLA2 |
| Picea glauca | Picea glauca (Moench) Voss var. densata Bailey | PIGLD |
| Picea glauca | Picea glauca (Moench) Voss var. porsildii Raup | PIGLP2 |
| Picea pungens | Picea pungens Engelm. | PIPUA |
| Picea pungens | Picea pungens Engelm. var. glauca Regel | PIPUG3 |
| Picea rubens | Picea australis Small | PIAU2 |
| pine | Pinus L. | PINUS |
| Pinus arizonica var. arizonica | Pinus ponderosa P.& C. Lawson ssp. arizonica (Engelm.) E. Murr. | PIPOA2 |
| Pinus arizonica var. arizonica | Pinus ponderosa P.& C. Lawson var. arizonica (Engelm.) Shaw | PIPOA |
| Pinus banksiana | Pinus divaricata (Ait.) Dum.-Cours. | PIDI4 |
| Pinus brutia var. eldarica | Pinus eldarica Medw. | PIEL6 |
| Pinus clausa | Pinus clausa (Chapman ex Engelm.) Vasey ex Sarg. ssp. immuginata (Ward) E. Murr. | PICLI |
| Pinus clausa | Pinus clausa (Chapman ex Engelm.) Vasey ex Sarg. var. immuginata Ward | PICLI2 |
| Pinus contorta | Pinus contorta Loudon ssp. contorta Loudon [superfluous autonym] | PICOC2 |
| Pinus contorta var. bolanderi | Pinus contorta Dougl. ex Loud. ssp. bolanderi (Parl.) Critchfield | PICOB2 |
| Pinus contorta var. latifolia | Pinus contorta Dougl. ex Loud. ssp. latifolia (Engelm. ex S. Wats.) Critchfield | PICOL2 |
| Pinus contorta var. latifolia | Pinus divaricata (Ait.) Dum.-Cours. var. hendersonii (Lemmon) Boivin | PIDIH |
| Pinus contorta var. latifolia | Pinus divaricata (Ait.) Dum.-Cours. var. latifolia (Engelm. ex S. Wats.) Boivin | PIDIL |
| Pinus contorta var. murrayana | Pinus contorta Dougl. ex Loud. ssp. murrayana (Grev. & Balf.) Critchfield | PICOM4 |
| Pinus contorta var. murrayana | Pinus murrayana Grev. & Balf. | PIMU6 |
| Pinus coulteri | Pinus ponderosa P.& C. Lawson ssp. coulteri (D. Don) E. Murr. | PIPOC |
| Pinus discolor | Pinus cembroides Zucc. var. bicolor Little | PICEB |
| Pinus discolor | Pinus culminicola Andr. & Beam. var. discolor (D.K. Bailey & Hawksworth) Silba | PICUD |
| Pinus edulis | Pinus cembroides Zucc. var. edulis (Engelm.) Voss | PICEE |
| Pinus elliottii var. densa | Pinus densa (Little & Dorman) Gaussen | PIDE3 |
| Pinus elliottii var. elliottii | Pinus caribaea sensu Small, non Morelet | PICA2 |
| Pinus elliottii var. elliottii | Pinus densa (Little & Dorman) Gaussen var. austrokeyensis Silba | PIDEA |
| Pinus elliottii var. elliottii | Pinus heterophylla (Ell.) Sudworth | PIHE6 |
| Pinus engelmannii | Pinus apacheca Lemmon | PIAP |
| Pinus engelmannii | Pinus latifolia Sarg. | PILA5 |
| Pinus jeffreyi | Pinus ponderosa P.& C. Lawson ssp. jeffreyi (Grev. & Balf.) E. Murr. | PIPOJ |
| Pinus kochiana | Pinus sosnowskyi Nakai | PISO2 |
| Pinus leiophylla var. chihuahuana | Pinus chihuahuana Engelm. | PICH3 |
| Pinus longaeva | Pinus aristata Engelm. var. longaeva (D.K. Bailey) Little | PIARL |
| Pinus monophylla var. californiarum | Pinus californiarum D.K. Bailey | PICA16 |
| Pinus monophylla var. fallax | Pinus edulis Engelm. var. fallax Little | PIEDF |
| Pinus monticola | Pinus strobus L. var. monticola (Dougl. ex D. Don) Nutt. | PISTM |
| Pinus mugo | Pinus montana Miller | PIMO6 |
| Pinus muricata | Pinus muricata D. Don var. borealis D.I. Axelrod ex Farjon | PIMUB |
| Pinus muricata | Pinus muricata D. Don var. muricata D. Don [superfluous autonym] | PIMUM |
| Pinus muricata | Pinus muricata D. Don var. remorata (Mason) Silba | PIMUR2 |
| Pinus muricata | Pinus muricata D. Don var. stantonii D.I. Axelrod ex Farjon | PIMUS |
| Pinus muricata | Pinus remorata Mason | PIRE2 |
| Pinus nigra | Pinus nigra Arnold var. austriaca (Hoess) Aschers. & Graebn. | PINIA |
| Pinus nigra ssp. pallasiana | Pinus nigra Arnold var. caramanica (Loudon) Rehder | PINIC2 |
| Pinus nigra ssp. pallasiana | Pinus pallasiana Lamb. | PIPA11 |
| Pinus palustris | Pinus australis Michx. f. | PIAU3 |
| Pinus parviflora | Pinus parviflora Siebold & Zucc. | PIPAG2 |
| Pinus parviflora | Pinus pentaphylla Mayr var. himekomatsu (Miyabe & Kudo) Koidz. | PIPEH2 |
| Pinus ponderosa var. ponderosa | Pinus beardsleyi A. Murr. | PIBE |
| Pinus ponderosa var. ponderosa | Pinus benthamiana Hartw. | PIBE2 |
| Pinus ponderosa var. ponderosa | Pinus brachyptera Engelm. | PIBR7 |
| Pinus ponderosa var. scopulorum | Pinus ponderosa P.& C. Lawson ssp. scopulorum (Engelm.) E. Murr. | PIPOS2 |
| Pinus quadrifolia | Pinus juarezensis Lanner | PIJU |
| Pinus radiata | Pinus radiata D. Don var. binata auct. non (S. Wats.) Lemmon [misapplied] | PIRAB |
| Pinus remota | Pinus cembroides Zucc. var. remota Little | PICER |
| Pinus serotina | Pinus rigida P. Mill. ssp. serotina (Michx.) Clausen | PIRIS |
| Pinus sibirica | Pinus cembra L. var. sibirica Loudon | PICES2 |
| Pinus strobiformis | Pinus ayacahuite C.A. Ehrenb. | PIAY |
| Pinus strobiformis | Pinus flexilis James var. reflexa Engelm. | PIFLR2 |
| Pinus strobiformis | Pinus reflexa (Engelm.) Engelm. | PIRE6 |
| Pinus strobus | Strobus strobus (L.) Small | STST6 |
| Pinus thunbergii | Pinus thunbergiana Franco | PITH3 |
| Pinus torreyana var. insularis | Pinus torreyana Parry ex Carr. ssp. insularis Haller | PITOI |
| Pinus wallichiana | Pinus griffithii McClell. | PIGR10 |
| Pinus washoensis | Pinus ponderosa P.& C. Lawson ssp. washoensis (Mason & Stockwell) E. Murr. | PIPOW |
| pitch pine | Pinus rigida P. Mill. | PIRI |
| pond pine | Pinus serotina Michx. | PISE |
| ponderosa pine | Pinus ponderosa P.& C. Lawson | PIPO |
| ponderosa pine | Pinus ponderosa P.& C. Lawson var. ponderosa | PIPOP |
| ponderosa pine | Pinus ponderosa P.& C. Lawson var. scopulorum Engelm. | PIPOS |
| Pseudolarix amabilis | Chrysolarix amabilis (J. Nelson) H. E. Moore | CHAM6 |
| Pseudotsuga menziesii | Pseudotsuga mucronata (Raf.) Sudw. | PSMU2 |
| Pseudotsuga menziesii var. glauca | Pseudotsuga flahaultii Flous | PSFL3 |
| Pseudotsuga menziesii var. glauca | Pseudotsuga menziesii (Mirbel) Franco var. flahaultii (Flous) Silba | PSMEF |
| Pseudotsuga menziesii var. glauca | Pseudotsuga taxifolia (Lamb.) Britt. var. glauca (Beissn.) Sudworth | PSTAG2 |
| Pseudotsuga menziesii var. menziesii | Pseudotsuga taxifolia (Lamb.) Britt. | PSTA2 |
| red pine | Pinus resinosa Ait. | PIRE |
| red spruce | Picea rubens Sarg. | PIRU |
| Rocky Mountain Douglas-fir | Pseudotsuga menziesii (Mirbel) Franco var. glauca (Beissn.) Franco | PSMEG |
| Sakhalin spruce | Picea glehnii (F. Schmidt) Mast. | PIGL7 |
| sand pine | Pinus clausa (Chapman ex Engelm.) Vasey ex Sarg. | PICL |
| Santa Cruz Island Torrey pine | Pinus torreyana Parry ex Carr. var. insularis (Haller) Siba | PITOI2 |
| Scots pine | Pinus sylvestris L. | PISY |
| Serbian spruce | Picea omorika (Pancic) Purk. | PIOM2 |
| Shasta red fir | Abies ?shastensis (Lemmon) Lemmon [magnifica ? procera] | ABSH |
| shortleaf pine | Pinus echinata P. Mill. | PIEC2 |
| Siberian larch | Larix sibirica Ledeb. | LASI3 |
| Siberian pine | Pinus sibirica Du Tour | PISI3 |
| Sierra lodgepole pine | Pinus contorta Dougl. ex Loud. var. murrayana (Grev. & Balf.) Engelm. | PICOM |
| silver fir | Abies alba P. Mill. | ABAL3 |
| singleleaf pinyon | Pinus monophylla Torr. & Fr?m. | PIMO |
| singleleaf pinyon | Pinus monophylla Torr. & Fr?m. var. fallax (Little) Silba | PIMOF |
| singleleaf pinyon | Pinus monophylla Torr. & Fr?m. var. monophylla | PIMOM2 |
| Sitka spruce | Picea sitchensis (Bong.) Carr. | PISI |
| slash pine | Pinus elliottii Engelm. | PIEL |
| southern Chinese pine | Pinus tabuliformis Carriere | PITA4 |
| southwestern white pine | Pinus strobiformis Engelm. | PIST3 |
| spruce | Picea A. Dietr. | PICEA |
| spruce pine | Pinus glabra Walt. | PIGL2 |
| subalpine fir | Abies lasiocarpa (Hook.) Nutt. | ABLA |
| subalpine fir | Abies lasiocarpa (Hook.) Nutt. var. lasiocarpa | ABLAL |
| subalpine larch | Larix lyallii Parl. | LALY |
| sugar pine | Pinus lambertiana Dougl. | PILA |
| Swiss stone pine | Pinus cembra L. | PICE2 |
| Table Mountain pine | Pinus pungens Lamb. | PIPU5 |
| tamarack | Larix laricina (Du Roi) K. Koch | LALA |
| Torrey pine | Pinus torreyana Parry ex Carr. | PITO |
| Torrey pine | Pinus torreyana Parry ex Carr. var. torreyana | PITOT2 |
| twoneedle pinyon | Pinus edulis Engelm. | PIED |
| Virginia pine | Pinus virginiana P. Mill. | PIVI2 |
| Washoe pine | Pinus washoensis Mason & Stockwell | PIWA |
| western hemlock | Tsuga heterophylla (Raf.) Sarg. | TSHE |
| western larch | Larix occidentalis Nutt. | LAOC |
| western white pine | Pinus monticola Dougl. ex D. Don | PIMO3 |
| white fir | Abies concolor (Gord. & Glend.) Lindl. ex Hildebr. | ABCO |
| white fir | Abies concolor (Gord. & Glend.) Lindl. ex Hildebr. var. concolor | ABCOC |
| white fir | Abies concolor (Gord. & Glend.) Lindl. ex Hildebr. var. lowiana (Gord. & Glend.) Lemmon | ABCOL |
| white spruce | Picea glauca (Moench) Voss | PIGL |
| whitebark pine | Pinus albicaulis Engelm. | PIAL |