| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ELBU | Eleutherine bulbosa (P. Mill.) Urban | lagrimas de la virgen | Iridaceae
|
| ELEUT | Eleutherine Herbert | eleutherine | Iridaceae
|
| ELPE6 | Eleutherococcus pentaphyllus (Sieb. & Zucc.) Nakai | ginseng | Araliaceae
|
| ELSE5 | Eleutherococcus senticosus (Rupr. & Maxim.) Maxim. | Siberian ginseng | Araliaceae
|
| ELEUT3 | Eleutherococcus Maxim. | ginseng | Araliaceae
|
| ELBAP | Elionurus barbiculmis Hack. var. parviflorus Scribn. | Elionurus barbiculmis | Poaceae
|
| ELBA | Elionurus barbiculmis Hack. | woolyspike balsamscale | Poaceae
|
| ELTR4 | Elionurus tripsacoides Humb. & Bonpl. ex Willd. | Pan American balsamscale | Poaceae
|
| ELION | Elionurus Humb. & Bonpl. ex Willd. | balsamscale grass | Poaceae
|
| ELCO7 | Elleanthus cordidactylus Ackerman | false tiger orchid | Orchidaceae
|
| ELLEA | Elleanthus K. Presl | tiger orchid | Orchidaceae
|
| ELPY | Elliottia pyroliflorus (Bong.) S.W. Brim & P.F. Stevens | copperbush | Ericaceae
|
| ELRA2 | Elliottia racemosa Muhl. ex Ell. | georgiaplume | Ericaceae
|
| ELLIO | Elliottia Muhl. ex Ell. | elliottia | Ericaceae
|
| ELNYC | Ellisia nyctelea (L.) L. var. coloradensis Brand | Ellisia nyctelea | Hydrophyllaceae
|
| ELNY | Ellisia nyctelea (L.) L. | Aunt Lucy | Hydrophyllaceae
|
| ELLIS | Ellisia L. | ellisia | Hydrophyllaceae
|
| ELRAP | Elmera racemosa (S. Wats.) Rydb. var. puberulenta C.L. Hitchc. | yellow coralbells | Saxifragaceae
|
| ELRAR | Elmera racemosa (S. Wats.) Rydb. var. racemosa | yellow coralbells | Saxifragaceae
|
| ELRA3 | Elmera racemosa (S. Wats.) Rydb. | yellow coralbells | Saxifragaceae
|
| ELMER | Elmera Rydb. | coralbells | Saxifragaceae
|
| ELBI2 | Elodea bifoliata St. John | twoleaf waterweed | Hydrocharitaceae
|
| ELBR3 | Elodea brandegeeae St. John | Elodea canadensis | Hydrocharitaceae
|
| ELCA7 | Elodea canadensis Michx. | Canadian waterweed | Hydrocharitaceae
|
| ELCO5 | Elodea columbiana St. John | Elodea nuttallii | Hydrocharitaceae
|
| ELDE3 | Elodea densa (Planch.) Caspary | Egeria densa | Hydrocharitaceae
|
| ELFR | Elodea fraseri Spach | Triadenum fraseri | Clusiaceae
|
| ELIO3 | Elodea ioensis Wylie | Elodea canadensis | Hydrocharitaceae
|
| ELLI | Elodea linearis (Rydb.) St. John | Elodea canadensis | Hydrocharitaceae
|
| ELLO2 | Elodea longivaginata St. John | Elodea bifoliata | Hydrocharitaceae
|
| ELMI5 | Elodea minor (Engelm. ex Caspary) Farw. | Elodea nuttallii | Hydrocharitaceae
|
| ELNE | Elodea nevadensis (Planch.) St. John | Elodea bifoliata | Hydrocharitaceae
|
| ELNU2 | Elodea nuttallii (Planch.) St. John | western waterweed | Hydrocharitaceae
|
| ELOC | Elodea occidentalis (Pursh) St. John | Elodea nuttallii | Hydrocharitaceae
|
| ELPL | Elodea planchonii Caspary | Elodea canadensis | Hydrocharitaceae
|
| ELSC | Elodea schweinitzii (Planch.) Caspary | Schweinitz's waterweed | Hydrocharitaceae
|
| ELODE | Elodea Michx. | waterweed | Hydrocharitaceae
|
| ELCI | Elsholtzia ciliata (Thunb.) Hyl. | crested latesummer mint | Lamiaceae
|
| ELCR5 | Elsholtzia cristata Willd. | Elsholtzia ciliata | Lamiaceae
|
| ELSHO | Elsholtzia Willd. | elsholtzia | Lamiaceae
|
| ELDI4 | Elsota diversifolia (L.) Blake | Securidaca diversifolia | Polygalaceae
|
| ELVI7 | Elsota virgata (Sw.) Kuntze | Securidaca virgata | Polygalaceae
|
| ELAC3 | Eltroplectris acuminata Raf. nom. illeg. | Eltroplectris calcarata | Orchidaceae
|
| ELCA18 | Eltroplectris calcarata (Sw.) Garay & Sweet | longclaw orchid | Orchidaceae
|
| ELTRO | Eltroplectris Raf. | eltroplectris | Orchidaceae
|
| ELAR5 | �Elyhordeum arcuatum Mitchell & Hodgson | arcuate barley | Poaceae
|
| ELDA | �Elyhordeum dakotense (Bowden) Bowden | Dakota barley | Poaceae
|
| ELIO | �Elyhordeum iowense Pohl | Iowa barley | Poaceae
|
| ELMA8 | �Elyhordeum macounii (Vasey) Barkworth & D.R. Dewey | Macoun's barley | Poaceae
|
| ELMO4 | �Elyhordeum montanense (Scribn.) Bowden | mountain barley | Poaceae
|
| ELSC2 | �Elyhordeum schaackianum (Bowden) Bowden | Schaack's barley | Poaceae
|
| ELST | �Elyhordeum stebbinsianum (Bowden) Bowden | Stebbins' barley | Poaceae
|
| ELYHO | �Elyhordeum Mansf. ex Zizin & Petrowa | barley | Poaceae
|
| ELAL4 | �Elyleymus aleuticus (Hult�n) Baum | Aleutian wildrye | Poaceae
|
| ELAR6 | �Elyleymus aristatus (Merr.) Barkworth & D.R. Dewey | purple wildrye | Poaceae
|
| ELCO8 | �Elyleymus colvillensis (Lepage) Barkworth | Colville wildrye | Poaceae
|
| ELHI4 | �Elyleymus hirtiflorus (A.S. Hitchc.) Barkworth | Canadian wildrye | Poaceae
|
| ELYLE | �Elyleymus Baum | wildrye | Poaceae
|
| ELDA4 | �Elymordeum dakotense Bowden | � Elyhordeum dakotense | Poaceae
|
| ELMOP3 | �Elymordeum montanense (Scribn.) Bowden var. pubescens Bowden | � Elyhordeum iowense | Poaceae
|
| ELMO8 | �Elymordeum montanense (Scribn.) Bowden | � Elyhordeum montanense | Poaceae
|
| ELSC5 | �Elymordeum schaackianum Bowden | � Elyhordeum schaackianum | Poaceae
|
| ELST4 | �Elymordeum stebbinsianum Bowden | � Elyhordeum stebbinsianum | Poaceae
|
| ELALA2 | Elymus alaskanus (Scribn. & Merr.) A. L�ve ssp. alaskanus | Alaskan wheatgrass | Poaceae
|
| ELALH | Elymus alaskanus (Scribn. & Merr.) A. L�ve ssp. hyperarcticus (Polunin) A.& D. L�ve | Elymus hyperarcticus | Poaceae
|
| ELALL | Elymus alaskanus (Scribn. & Merr.) A. L�ve ssp. latiglumis (Scribn. & J.G. Sm.) A. L�ve | Alaskan wheatgrass | Poaceae
|
| ELAL5 | Elymus alaskanus (Scribn. & Merr.) A. L�ve | Alaskan wheatgrass | Poaceae
|
| ELALG | Elymus albicans (Scribn. & J.G. Sm.) A. L�ve var. griffithii (Scribn. & J.G. Sm. ex Piper) Dorn | Elymus albicans | Poaceae
|
| ELAL7 | Elymus albicans (Scribn. & J.G. Sm.) A. L�ve | Montana wheatgrass | Poaceae
|
| ELAL3 | Elymus �aleuticus (Hult�n) Bowden | � Elyleymus aleuticus | Poaceae
|
| ELAMS3 | Elymus ambiguus Vasey & Scribn. var. salinus (M.E. Jones) C.L. Hitchc. | Leymus salinus ssp. salinus | Poaceae
|
| ELAMS2 | Elymus ambiguus Vasey & Scribn. var. salmonis C.L. Hitchc. | Leymus salinus ssp. salmonis | Poaceae
|
| ELAMS | Elymus ambiguus Vasey & Scribn. var. strigosus (Rydb.) A.S. Hitchc. | Leymus salinus ssp. salinus | Poaceae
|
| ELAM2 | Elymus ambiguus Vasey & Scribn. | Leymus ambiguus | Poaceae
|
| ELAN80 | Elymus angustus Trin. | Leymus angustus | Poaceae
|
| ELARM | Elymus arenarius L. ssp. mollis (Trin.) Hult�n | Leymus mollis ssp. mollis | Poaceae
|
| ELARV2 | Elymus arenarius L. ssp. villosissimus (Scribn.) Hult�n | Leymus mollis ssp. villosissimus | Poaceae
|
| ELARG | Elymus arenarius L. var. giganteus (Vahl) Schmalh. | Leymus racemosus | Poaceae
|
| ELARS2 | Elymus arenarius L. var. scabrinervis (Bowden) Boivin | Leymus mollis ssp. mollis | Poaceae
|
| ELARS | Elymus arenarius L. var. simulans (Bowden) Boivin | Elymus maltei | Poaceae
|
| ELARV | Elymus arenarius L. var. villosissimus (Scribn.) Polunin | Leymus mollis ssp. villosissimus | Poaceae
|
| ELARV4 | Elymus arenarius L. var. villosus E. Mey. | Leymus mollis ssp. mollis | Poaceae
|
| ELAR | Elymus arenarius L. | Leymus arenarius | Poaceae
|
| ELAR2 | Elymus arenicola Scribn. & J.G. Sm. | Leymus flavescens | Poaceae
|
| ELAR10 | Elymus aristatus Merr. | � Elyleymus aristatus | Poaceae
|
| ELAR7 | Elymus arizonicus (Scribn. & J.G. Sm.) Gould | Arizona wheatgrass | Poaceae
|
| ELAR13 | Elymus arkansanus Scribn. & Ball | Elymus villosus | Poaceae
|
| ELAU2 | Elymus australis Scribn. & Ball | Elymus virginicus var. virginicus | Poaceae
|
| ELBA3 | Elymus bakeri (E. Nels.) A. L�ve | Baker's wheatgrass | Poaceae
|
| ELBR7 | Elymus brachystachys Scribn. & Ball | Elymus canadensis | Poaceae
|
| ELBR8 | Elymus brownii Scribn. & J.G. Sm. | Leymus innovatus | Poaceae
|
| ELCA22 | Elymus calderi Barkworth | Yukon wheatgrass | Poaceae
|
| ELCA10 | Elymus californicus (Boland. ex Thurb.) Gould | California bottlebrush grass | Poaceae
|
| ELCAW3 | Elymus canadensis L. ssp. wiegandii (Fern.) A. L�ve | Elymus wiegandii | Poaceae
|
| ELCAB2 | Elymus canadensis L. var. brachystachys (Scribn. & Ball) Farw. | Elymus canadensis | Poaceae
|
| ELCAH | Elymus canadensis L. var. hirsutus (Farw.) Dorn | Elymus canadensis | Poaceae
|
| ELCAI | Elymus canadensis L. var. interruptus (Buckl.) Church | Elymus interruptus | Poaceae
|
| ELCAR2 | Elymus canadensis L. var. riparius (Wieg.) Boivin | Elymus riparius | Poaceae
|
| ELCAR3 | Elymus canadensis L. var. robustus (Scribn. & J.G. Sm.) Mackenzie & Bush | Elymus canadensis | Poaceae
|
| ELCAV2 | Elymus canadensis L. var. villosus (Muhl. ex Willd.) Shinners | Elymus villosus | Poaceae
|
| ELCAW | Elymus canadensis L. var. wiegandii (Fern.) Bowden | Elymus wiegandii | Poaceae
|