| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ELSMM | Elytrigia smithii (Rydb.) Nevski var. mollis (Scribn. & J.G. Sm.) Beetle | Pascopyrum smithii | Poaceae
|
| ELSM4 | Elytrigia smithii (Rydb.) Nevski | Pascopyrum smithii | Poaceae
|
| ELSP4 | Elytrigia spicata (Pursh) D.R. Dewey | Pseudoroegneria spicata ssp. spicata | Poaceae
|
| ELVA3 | Elytrigia vaillantiana (Wulfen & Schreb.) Beetle | Elymus repens | Poaceae
|
| EMHI | Embelia hillebrandii Mez | Embelia pacifica | Myrsinaceae
|
| EMPA | Embelia pacifica Hbd. | kilioe | Myrsinaceae
|
| EMBEL | Embelia Burm. f. | embelia | Myrsinaceae
|
| EMOF | Emblica officinalis Gaertner | Phyllanthus emblica | Euphorbiaceae
|
| EMTO | Emelista tora sensu Britt. & Rose | Senna obtusifolia | Fabaceae
|
| EMAU | Emex australis Steinh. | southern threecornerjack | Polygonaceae
|
| EMSP | Emex spinosa (L.) Campd. | spiny threecornerjack | Polygonaceae
|
| EMEX | Emex Campd. | threecornerjack | Polygonaceae
|
| EMCO | Emilia coccinea (Sims) G. Don | scarlet tasselflower | Asteraceae
|
| EMFO | Emilia fosbergii D.H. Nicols. | Florida tasselflower | Asteraceae
|
| EMJA | Emilia javanica (Burm. f.) C.B. Robins. | Emilia sonchifolia var. javanica | Asteraceae
|
| EMSOJ | Emilia sonchifolia (L.) DC. var. javanica (Burm. f.) Mattf. | lilac tasselflower | Asteraceae
|
| EMSOS | Emilia sonchifolia (L.) DC. var. sonchifolia | lilac tasselflower | Asteraceae
|
| EMSO | Emilia sonchifolia (L.) DC. | lilac tasselflower | Asteraceae
|
| EMILI | Emilia Cass. | tasselflower | Asteraceae
|
| EMPEP | Emmenanthe penduliflora Benth. var. penduliflora | whisperingbells | Hydrophyllaceae
|
| EMPER | Emmenanthe penduliflora Benth. var. rosea Brand | whisperingbells | Hydrophyllaceae
|
| EMPE | Emmenanthe penduliflora Benth. | whisperingbells | Hydrophyllaceae
|
| EMRO | Emmenanthe rosea (Brand) Constance | Emmenanthe penduliflora var. rosea | Hydrophyllaceae
|
| EMMEN | Emmenanthe Benth. | whisperingbells | Hydrophyllaceae
|
| EMSU | Emorya suaveolens Torr. | emorybush | Buddlejaceae
|
| EMORY | Emorya Torr. | emorya | Buddlejaceae
|
| EMAT | Empetrum atropurpureum Fern. & Wieg. | Empetrum eamesii ssp. atropurpureum | Empetraceae
|
| EMEAA | Empetrum eamesii Fern. & Wieg. ssp. atropurpureum (Fern. & Wieg.) D. L�ve | purple crowberry | Empetraceae
|
| EMEAH | Empetrum eamesii Fern. & Wieg. ssp. hermaphroditum (Lange ex Hagerup) D. L�ve | Empetrum nigrum ssp. hermaphroditum | Empetraceae
|
| EMEA | Empetrum eamesii Fern. & Wieg. | purple crowberry | Empetraceae
|
| EMHE | Empetrum hermaphroditum Lange ex Hagerup | Empetrum nigrum ssp. hermaphroditum | Empetraceae
|
| EMNIH | Empetrum nigrum L. ssp. hermaphroditum (Lange ex Hagerup) B�cher | black crowberry | Empetraceae
|
| EMNIN | Empetrum nigrum L. ssp. nigrum | black crowberry | Empetraceae
|
| EMNIA | Empetrum nigrum L. var. atropurpureum (Fern. & Wieg.) Boivin | Empetrum eamesii ssp. atropurpureum | Empetraceae
|
| EMNIP | Empetrum nigrum L. var. purpureum (Raf.) A. DC. | Empetrum eamesii ssp. atropurpureum | Empetraceae
|
| EMNI | Empetrum nigrum L. | black crowberry | Empetraceae
|
| EMRUA | Empetrum rubrum Vahl var. atropurpureum (Fern. & Wieg.) R. Good | Empetrum eamesii ssp. atropurpureum | Empetraceae
|
| EMPET | Empetrum L. | crowberry | Empetraceae
|
| ENLA2 | Enallagma latifolia (P. Mill.) Small | Amphitecna latifolia | Bignoniaceae
|
| ENAFM2 | Encalypta affinis Hedw. f. in Web. & Mohr ssp. macounii (Aust.) Horton | Encalypta affinis var. macounii | Encalyptaceae
|
| ENAFA | Encalypta affinis Hedw. f. in Web. & Mohr var. affinis | candle snuffer moss | Encalyptaceae
|
| ENAFM | Encalypta affinis Hedw. f. in Web. & Mohr var. macounii (Aust.) Crum & Anderson | Macoun's candle snuffer moss | Encalyptaceae
|
| ENAF2 | Encalypta affinis Hedw. f. in Web. & Mohr | candle snuffer moss | Encalyptaceae
|
| ENAL70 | Encalypta alpina Sm. | alpine candle snuffer moss | Encalyptaceae
|
| ENAP | Encalypta apophysata Nees & Hornsch. in Nees et al. | Encalypta affinis var. affinis | Encalyptaceae
|
| ENBRC2 | Encalypta brevicolla (Bruch & Schimp. in B.S.G.) Bruch ex �ngstr. ssp. crumiana Horton | Encalypta brevicolla var. crumiana | Encalyptaceae
|
| ENBRB | Encalypta brevicolla (Bruch & Schimp. in B.S.G.) Bruch ex �ngstr. var. brevicolla | candle snuffer moss | Encalyptaceae
|
| ENBRC | Encalypta brevicolla (Bruch & Schimp. in B.S.G.) Bruch ex �ngstr. var. crumiana (Horton) Crum & Anderson | Crum's candle snuffer moss | Encalyptaceae
|
| ENBR4 | Encalypta brevicolla (Bruch & Schimp. in B.S.G.) Bruch ex �ngstr. | candle snuffer moss | Encalyptaceae
|
| ENBR2 | Encalypta brevipes Schljak. | candle snuffer moss | Encalyptaceae
|
| ENCIM | Encalypta ciliata Hedw. var. microstoma Schimp. | Encalypta ciliata | Encalyptaceae
|
| ENCIP | Encalypta ciliata Hedw. var. pilifera Flow. | Encalypta brevicolla var. brevicolla | Encalyptaceae
|
| ENCIS | Encalypta ciliata Hedw. var. sibirica Weinm. | Encalypta sibirica | Encalyptaceae
|
| ENCI70 | Encalypta ciliata Hedw. | fringed candle snuffer moss | Encalyptaceae
|
| ENFL2 | Encalypta flowersiana Horton | Flowers' candle snuffer moss | Encalyptaceae
|
| ENIN | Encalypta intermedia Jur. in Jur. & Milde | intermediate candle snuffer moss | Encalyptaceae
|
| ENLO70 | Encalypta longicolla Bruch | candle snuffer moss | Encalyptaceae
|
| ENMI2 | Encalypta microstoma Bals. & De Not. | candle snuffer moss | Encalyptaceae
|
| ENMU70 | Encalypta mutica Hag. | candle snuffer moss | Encalyptaceae
|
| ENPR70 | Encalypta procera Bruch | candle snuffer moss | Encalyptaceae
|
| ENRH2 | Encalypta rhabdocarpa nom. illeg. orthogr. pro | Encalypta rhaptocarpa | Encalyptaceae
|
| ENRHS | Encalypta rhaptocarpa Schwaegr. var. subspathulata (C. M�ll. & Kindb. in Mac. & Kindb.) Flow. | Encalypta rhaptocarpa | Encalyptaceae
|
| ENRH70 | Encalypta rhaptocarpa Schwaegr. | yellow awn candle snuffer moss | Encalyptaceae
|
| ENSI2 | Encalypta sibirica (Weinm.) Warnst. | Siberian candle snuffer moss | Encalyptaceae
|
| ENSP | Encalypta spathulata C. M�ll. | spathulate candle snuffer moss | Encalyptaceae
|
| ENVI2 | Encalypta vittiana Horton | Vitt's candle snuffer moss | Encalyptaceae
|
| ENVUA | Encalypta vulgaris Hedw. var. apiculata Wahlenb. | Encalypta vulgaris | Encalyptaceae
|
| ENVUM | Encalypta vulgaris Hedw. var. mutica Brid. | Encalypta vulgaris | Encalyptaceae
|
| ENVUR | Encalypta vulgaris Hedw. var. rhaptocarpa (Schwaegr.) Lawt. | Encalypta rhaptocarpa | Encalyptaceae
|
| ENVU | Encalypta vulgaris Hedw. | common candle snuffer moss | Encalyptaceae
|
| ENCAL2 | Encalypta Hedw. | candle snuffer moss | Encalyptaceae
|
| ENAC | Encelia actonii Elmer | Encelia virginensis var. actonii | Asteraceae
|
| ENCA | Encelia californica Nutt. | California brittlebush | Asteraceae
|
| ENFAF | Encelia farinosa Gray ex Torr. var. farinosa | goldenhills | Asteraceae
|
| ENFAP | Encelia farinosa Gray ex Torr. var. phenicodonta (Blake) I.M. Johnston | goldenhills | Asteraceae
|
| ENFAR | Encelia farinosa Gray ex Torr. var. radians Brandeg. ex Blake | goldenhills | Asteraceae
|
| ENFA | Encelia farinosa Gray ex Torr. | goldenhills | Asteraceae
|
| ENFRA | Encelia frutescens (Gray) Gray var. actonii (Elmer) Blake | Encelia virginensis var. actonii | Asteraceae
|
| ENFRF | Encelia frutescens (Gray) Gray var. frutescens | button brittlebush | Asteraceae
|
| ENFRR | Encelia frutescens (Gray) Gray var. resinosa M.E. Jones ex Blake | button brittlebush | Asteraceae
|
| ENFRV | Encelia frutescens (Gray) Gray var. virginensis (A. Nels.) Blake | Encelia virginensis var. virginensis | Asteraceae
|
| ENFR | Encelia frutescens (Gray) Gray | button brittlebush | Asteraceae
|
| ENMI | Encelia microcephala Gray | Helianthella microcephala | Asteraceae
|
| ENNU3 | Encelia nudicaulis Gray | Enceliopsis nudicaulis var. nudicaulis | Asteraceae
|
| ENNU4 | Encelia nutans Eastw. | Enceliopsis nutans | Asteraceae
|
| ENSCS | Encelia scaposa (Gray) Gray var. stenophylla Shinners | Encelia scaposa | Asteraceae
|
| ENSC | Encelia scaposa (Gray) Gray | onehead brittlebush | Asteraceae
|
| ENVIA2 | Encelia virginensis A. Nels. ssp. actonii (Elmer) Keck | Encelia virginensis var. actonii | Asteraceae
|
| ENVIA | Encelia virginensis A. Nels. var. actonii (Elmer) B.L. Turner | Acton's brittlebush | Asteraceae
|
| ENVIV | Encelia virginensis A. Nels. var. virginensis | Virgin River brittlebush | Asteraceae
|
| ENVI | Encelia virginensis A. Nels. | Virgin River brittlebush | Asteraceae
|
| ENCEL | Encelia Adans. | brittlebush | Asteraceae
|
| ENARG | Enceliopsis argophylla (D.C. Eat.) A. Nels. var. grandiflora Jepson | Enceliopsis covillei | Asteraceae
|
| ENAR | Enceliopsis argophylla (D.C. Eat.) A. Nels. | silverleaf sunray | Asteraceae
|
| ENCO | Enceliopsis covillei (A. Nels.) Blake | Panamint daisy | Asteraceae
|
| ENNUC | Enceliopsis nudicaulis (Gray) A. Nels. var. corrugata Cronq. | nakedstem sunray | Asteraceae
|
| ENNUN | Enceliopsis nudicaulis (Gray) A. Nels. var. nudicaulis | nakedstem sunray | Asteraceae
|
| ENNU | Enceliopsis nudicaulis (Gray) A. Nels. | nakedstem sunray | Asteraceae
|
| ENNU2 | Enceliopsis nutans (Eastw.) A. Nels. | nodding sunray | Asteraceae
|
| ENCEL2 | Enceliopsis (Gray) A. Nels. | sunray | Asteraceae
|
| ENBO | Encyclia boothiana (Lindl.) Dressler | dollar orchid | Orchidaceae
|