| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| EUMI6 | Euthamia minor (Michx.) Greene | Euthamia tenuifolia var. tenuifolia | Asteraceae
|
| EUNU4 | Euthamia nuttallii Greene | Euthamia graminifolia var. nuttallii | Asteraceae
|
| EUOC4 | Euthamia occidentalis Nutt. | western goldentop | Asteraceae
|
| EUPU5 | Euthamia pulverulenta Greene | Euthamia gymnospermoides | Asteraceae
|
| EURE9 | Euthamia remota Greene | Euthamia tenuifolia var. tenuifolia | Asteraceae
|
| EUTEP | Euthamia tenuifolia (Pursh) Nutt. var. pycnocephala (Fern.) C.& J. Taylor | slender goldentop | Asteraceae
|
| EUTET | Euthamia tenuifolia (Pursh) Nutt. var. tenuifolia | slender goldentop | Asteraceae
|
| EUTE7 | Euthamia tenuifolia (Pursh) Nutt. | slender goldentop | Asteraceae
|
| EUTHA | Euthamia Nutt. ex Cass. | goldentop | Asteraceae
|
| EUEDP | Eutrema edwardsii R. Br. ssp. penlandii (Rollins) W.A. Weber | Eutrema penlandii | Brassicaceae
|
| EUED | Eutrema edwardsii R. Br. | Edwards' mock wallflower | Brassicaceae
|
| EUPE10 | Eutrema penlandii Rollins | Penland's eutrema | Brassicaceae
|
| EUWA2 | Eutrema wasabi (Siebold) Maxim. | Wasabia japonica | Brassicaceae
|
| EUTRE | Eutrema R. Br. | eutrema | Brassicaceae
|
| EVAC | Evax acaulis (Kellogg) Greene | Hesperevax acaulis var. acaulis | Asteraceae
|
| EVAC2 | Evax acaulis Greene, non (Kellogg) Greene | Hesperevax caulescens | Asteraceae
|
| EVCA | Evax candida (Torr. & Gray) Gray | silver pygmycudweed | Asteraceae
|
| EVCAH | Evax caulescens (Benth.) Gray var. humilis (Greene) Jepson | Hesperevax caulescens | Asteraceae
|
| EVCAP | Evax caulescens (Benth.) Gray var. petiolata Gray | Hesperevax caulescens | Asteraceae
|
| EVIN | Evax involucrata Greene | Hesperevax caulescens | Asteraceae
|
| EVMUD | Evax multicaulis DC. var. drummondii (Torr. & Gray) Gray | Evax verna var. drummondii | Asteraceae
|
| EVMU | Evax multicaulis DC. | Evax verna var. verna | Asteraceae
|
| EVPR | Evax prolifera Nutt. ex DC. | bighead pygmycudweed | Asteraceae
|
| EVSPB | Evax sparsiflora (Gray) Jepson var. brevifolia (Gray) Jepson | Hesperevax sparsiflora var. brevifolia | Asteraceae
|
| EVSP | Evax sparsiflora (Gray) Jepson | Hesperevax sparsiflora var. sparsiflora | Asteraceae
|
| EVVED | Evax verna Raf. var. drummondii (Torr. & Gray) Kartesz & Gandhi | spring pygmycudweed | Asteraceae
|
| EVVEV | Evax verna Raf. var. verna | spring pygmycudweed | Asteraceae
|
| EVVE | Evax verna Raf. | spring pygmycudweed | Asteraceae
|
| EVAX | Evax Gaertn. | pygmy cudweed | Asteraceae
|
| EVDI | Evernia divaricata (L.) Ach. | ring lichen | Parmeliaceae
|
| EVES | Evernia esorediosa (Mull. Arg.) Du Rietz | ring lichen | Parmeliaceae
|
| EVFU | Evernia furfuracea (L.) W. Mann | Pseudevernia intensa | Parmeliaceae
|
| EVME60 | Evernia mesomorpha Nyl. | ring lichen | Parmeliaceae
|
| EVPE60 | Evernia perfragilis Llano | ring lichen | Parmeliaceae
|
| EVPR2 | Evernia prunastri (L.) Ach. | ring lichen | Parmeliaceae
|
| EVTH | Evernia thamnodes (Flotow) Arnold | Evernia mesomorpha | Parmeliaceae
|
| EVVU | Evernia vulpina (L.) Ach. | Letharia vulpina | Parmeliaceae
|
| EVERN2 | Evernia Ach. | ring lichen | Parmeliaceae
|
| EVCA3 | Everniastrum catawbiense (Degel.) Hale ex Sipamn | | Parmeliaceae
|
| EVSO | Everniastrum sorocheilum (Vainio) Hale ex Sipman | Everniastrum catawbiense | Parmeliaceae
|
| EVERN3 | Everniastrum Hale ex Sipman | everniastrum | Parmeliaceae
|
| EVFL | Everniicola flexispora D. Hawksw. | | Uncertain Lichen Family
|
| EVERN4 | Everniicola D. Hawksw. | everniicola | Uncertain Lichen Family
|
| EVALA | Evolvulus alsinoides (L.) L. var. acapulcensis (Willd.) van Ooststr. | Evolvulus alsinoides var. angustifolius | Convolvulaceae
|
| EVALA2 | Evolvulus alsinoides (L.) L. var. angustifolius Torr. | slender dwarf morning-glory | Convolvulaceae
|
| EVALD | Evolvulus alsinoides (L.) L. var. debilis (Kunth) van Ooststr. | slender dwarf morning-glory | Convolvulaceae
|
| EVALG | Evolvulus alsinoides (L.) L. var. grisebachianus Meisn. | Evolvulus alsinoides var. angustifolius | Convolvulaceae
|
| EVALH | Evolvulus alsinoides (L.) L. var. hiticaulis Torr. | Evolvulus alsinoides var. angustifolius | Convolvulaceae
|
| EVALL | Evolvulus alsinoides (L.) L. var. linifolius (L.) Baker | Evolvulus alsinoides var. angustifolius | Convolvulaceae
|
| EVAL | Evolvulus alsinoides (L.) L. | slender dwarf morning-glory | Convolvulaceae
|
| EVARL | Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. | Evolvulus arizonicus | Convolvulaceae
|
| EVAR | Evolvulus arizonicus Gray | wild dwarf morning-glory | Convolvulaceae
|
| EVCO | Evolvulus convolvuloides (Willd. ex J.A. Schultes) Stearn | bindweed dwarf morning-glory | Convolvulaceae
|
| EVFI | Evolvulus filipes Mart. | Maryland dwarf morning-glory | Convolvulaceae
|
| EVGL | Evolvulus glaber Spreng. | Evolvulus convolvuloides | Convolvulaceae
|
| EVGLG | Evolvulus glomeratus Nees & Mart. ssp. grandiflorus (Parodi) van Ooststr. | | Convolvulaceae
|
| EVGL2 | Evolvulus glomeratus Nees & Mart. | | Convolvulaceae
|
| EVGR | Evolvulus grisebachii Peter | Grisebach's dwarf morning-glory | Convolvulaceae
|
| EVLA | Evolvulus laetus Gray | Evolvulus arizonicus | Convolvulaceae
|
| EVLI | Evolvulus linifolius L. | Evolvulus alsinoides var. angustifolius | Convolvulaceae
|
| EVMA | Evolvulus macilentus Small | Evolvulus sericeus var. glaberrimus | Convolvulaceae
|
| EVNU2 | Evolvulus nummularius (L.) L. | agracejo rastrero | Convolvulaceae
|
| EVNU | Evolvulus nuttallianus J.A. Schultes | shaggy dwarf morning-glory | Convolvulaceae
|
| EVPI | Evolvulus pilosus Nutt. | Evolvulus nuttallianus | Convolvulaceae
|
| EVSEA | Evolvulus sericeus Sw. var. averyi Ward | Evolvulus sericeus var. glaberrimus | Convolvulaceae
|
| EVSED | Evolvulus sericeus Sw. var. discolor (Benth.) Gray | Evolvulus sericeus var. sericeus | Convolvulaceae
|
| EVSEG | Evolvulus sericeus Sw. var. glaberrimus B.L. Robins. | silver dwarf morning-glory | Convolvulaceae
|
| EVSES | Evolvulus sericeus Sw. var. sericeus | silver dwarf morning-glory | Convolvulaceae
|
| EVSE | Evolvulus sericeus Sw. | silver dwarf morning-glory | Convolvulaceae
|
| EVSQ | Evolvulus squamosus Britt. | rockyplains dwarf morning-glory | Convolvulaceae
|
| EVWR | Evolvulus wrightii House | Evolvulus grisebachii | Convolvulaceae
|
| EVOLV | Evolvulus L. | dwarf morning-glory | Convolvulaceae
|
| EXCH | Exacum chilense Bertero | Cicendia quadrangularis | Gentianaceae
|
| EXIN | Exacum inflatum Hook. & Arn. | Cicendia quadrangularis | Gentianaceae
|
| EXAG | Excoecaria agallocha L. | | Euphorbiaceae
|
| EXPO | Excoecaria polyandra Griseb. | Forchhammeria polyandra | Capparaceae
|
| EXCOE | Excoecaria L. | | Euphorbiaceae
|
| EXGA | Exocarpos gaudichaudii A. DC. | hulumoa | Santalaceae
|
| EXLU | Exocarpos luteolus Forbes | leafy ballart | Santalaceae
|
| EXME | Exocarpos menziesii Stauffer | Menzies' ballart | Santalaceae
|
| EXOCA | Exocarpos Labill. | exocarpos | Santalaceae
|
| EXGR | Exochorda grandiflora (Hook.) Lindl. | Exochorda racemosa | Rosaceae
|
| EXRA | Exochorda racemosa (Lindl.) Rehd. | common pearlbrush | Rosaceae
|
| EXOCH | Exochorda Lindl. | pearlbrush | Rosaceae
|
| EXAR | Exogonium arenarium Choisy | Ipomoea steudelii | Convolvulaceae
|
| EXEG | Exogonium eggersii House | Ipomoea eggersii | Convolvulaceae
|
| EXMI | Exogonium microdactylum (Griseb.) House | Ipomoea microdactyla | Convolvulaceae
|
| EXRE | Exogonium repandum (Jacq.) Choisy | Ipomoea repanda | Convolvulaceae
|
| EXSO | Exogonium solanifolium (L.) Britt. | Jacquemontia solanifolia | Convolvulaceae
|
| EXCA | Exostema caribaeum (Jacq.) J.A. Schultes | Caribbean princewood | Rubiaceae
|
| EXEL | Exostema ellipticum Griseb. | plateado | Rubiaceae
|
| EXOST | Exostema (Pers.) L.C. Rich. ex Humb. & Bonpl. | exostema | Rubiaceae
|
| EXPA | Exothea paniculata (Juss.) Radlk. | butterbough | Sapindaceae
|
| EXOTH | Exothea Macfad. | exothea | Sapindaceae
|
| EYAN2 | Eysenhardtia angustifolia Pennell | Eysenhardtia texana | Fabaceae
|
| EYOR | Eysenhardtia orthocarpa (Gray) S. Wats. | Tahitian kidneywood | Fabaceae
|
| EYPO | Eysenhardtia polystachya (Ortega) Sarg. | Mexican kidneywood | Fabaceae
|
| EYSP | Eysenhardtia spinosa Engelm. | spiny kidneywood | Fabaceae
|
| EYTE | Eysenhardtia texana Scheele | Texas kidneywood | Fabaceae
|
| EYSEN | Eysenhardtia Kunth | kidneywood | Fabaceae
|
| FAVU3 | Faba vulgaris Moench | Vicia faba | Fabaceae
|