| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ENCO3 | Encyclia cochleata (L.) Dressler | clamshell orchid | Orchidaceae
|
| ENGR | Encyclia gravida (Lindl.) Schlechter | heavyfruit butterfly orchid | Orchidaceae
|
| ENIS | Encyclia isochila (Reichenb. f.) D. Dod | royal star orchid | Orchidaceae
|
| ENKR | Encyclia kraenzlinii (Bello) Ackerman | Psychilis kraenzlinii | Orchidaceae
|
| ENKR2 | Encyclia krugii (Bello) Britt. & Wilson | Psychilis krugii | Orchidaceae
|
| ENPY | Encyclia pygmaea (Hook.) Dressler | dwarf butterfly orchid | Orchidaceae
|
| ENRU | Encyclia rufa (Lindl.) Britt. & Millsp. | rufous butterfly orchid | Orchidaceae
|
| ENSI | Encyclia sintenisii (Reichenb. f.) Britt. | Encyclia gravida | Orchidaceae
|
| ENTA | Encyclia tampensis (Lindl.) Small | Tampa butterfly orchid | Orchidaceae
|
| ENCYC | Encyclia Hook. | butterfly orchid | Orchidaceae
|
| ENEL | Endiandra elaeocarpa Gillespie | | Lauraceae
|
| ENDIA | Endiandra R. Br. | | Lauraceae
|
| ENAD | Endocarpon adscendens (Anzi) Mull. Arg. | chalice lichen | Verrucariaceae
|
| ENAD2 | Endocarpon adsurgens Vainio | chalice lichen | Verrucariaceae
|
| ENDR | Endocarpon drummondii (Tuck.) Choisy | Staurothele drummondii | Verrucariaceae
|
| ENLE | Endocarpon lepidallum Nyl. | chalice lichen | Verrucariaceae
|
| ENMO2 | Endocarpon monicae Zahlbr. | Staurothele monicae | Verrucariaceae
|
| ENOC2 | Endocarpon ochroleucum Tuck. | Heterocarpon ochroleucum | Verrucariaceae
|
| ENPA2 | Endocarpon pallidum Ach. | chalice lichen | Verrucariaceae
|
| ENPE | Endocarpon petrolepideum (Nyl.) Hasse | chalice lichen | Verrucariaceae
|
| ENPU | Endocarpon pulvinatum Th. Fr. | pulvinate chalice lichen | Verrucariaceae
|
| ENPU2 | Endocarpon pusillum Hedwig | chalice lichen | Verrucariaceae
|
| ENSU | Endocarpon subnitescens Nyl. | chalice lichen | Verrucariaceae
|
| ENTO2 | Endocarpon tortuosum Herre | tortured chalice lichen | Verrucariaceae
|
| ENWI | Endocarpon wilmsoides Zahlbr. | Staurothele drummondii | Verrucariaceae
|
| ENDOC | Endocarpon Hedwig | chalice lichen | Verrucariaceae
|
| ENBU | Endococcus buelliae (Dodge) Matzer | | Uncertain Lichen Family
|
| ENPE2 | Endococcus perpusillus Nyl. | | Uncertain Lichen Family
|
| ENPR2 | Endococcus propinquus (Korber) D. Hawksw. | | Uncertain Lichen Family
|
| ENRU2 | Endococcus rugulosus Nyl. | | Uncertain Lichen Family
|
| ENZA | Endococcus zahlbrucknerellae (Henssen) D. Hawksw. | | Uncertain Lichen Family
|
| ENDOC2 | Endococcus Nyl. | endococcus | Uncertain Lichen Family
|
| ENSEH | Endodeca serpentaria (L.) Raf. var. hastata (Nutt.) C.F. Reed | Aristolochia serpentaria | Aristolochiaceae
|
| ENCO5 | Endolepis covillei Standl. | Coville's endolepis | Chenopodiaceae
|
| ENDI | Endolepis dioica (Nutt.) Standl. | Suckley's endolepis | Chenopodiaceae
|
| ENDOL | Endolepis Torr. | endolepis | Chenopodiaceae
|
| ENAM | Endopyrenium americanum de Lesd. | Catapyrenium compactum | Verrucariaceae
|
| ENBA | Endopyrenium bajadanae de Lesd. | Catapyrenium acarosporoides | Verrucariaceae
|
| ENCR | Endopyrenium crustaceum de Lesd. | Catapyrenium granulosum | Verrucariaceae
|
| ENGR2 | Endopyrenium granulosum de Lesd. | Catapyrenium granulosum | Verrucariaceae
|
| ENNO2 | Endopyrenium novomexicanum de Lesd. | Catapyrenium acarosporoides | Verrucariaceae
|
| ENPL | Endopyrenium plumbeum de Lesd. | Catapyrenium plumbeum | Verrucariaceae
|
| ENRU3 | Endopyrenium rupicola de Lesd. | Catapyrenium compactum | Verrucariaceae
|
| ENAT | Endorima atropurpurea (Harper) Small | Balduina atropurpurea | Asteraceae
|
| ENUN | Endorima uniflora (Nutt.) Raf. | Balduina uniflora | Asteraceae
|
| ENHI | Endymion hispanicus (P. Mill.) Chouard | Hyacinthoides hispanica | Liliaceae
|
| ENNO | Endymion nonscripta (L.) Garcke | Hyacinthoides nonscripta | Liliaceae
|
| ENBI | Enemion biternatum Raf. | eastern false rue anemone | Ranunculaceae
|
| ENHA | Enemion hallii (Gray) Drumm. & Hutchinson | Willamette false rue anemone | Ranunculaceae
|
| ENOC | Enemion occidentale (Hook. & Arn.) Drumm. & Hutchinson | western false rue anemone | Ranunculaceae
|
| ENST | Enemion stipitatum (Gray) Drumm. & Hutchinson | Siskiyou false rue anemone | Ranunculaceae
|
| ENEMI | Enemion Raf. | false rue anemone | Ranunculaceae
|
| ENPE4 | Engelmannia peristenia (Raf.) Goodman & Lawson | Engelmann's daisy | Asteraceae
|
| ENPI | Engelmannia pinnatifida Gray ex Nutt. | Engelmannia peristenia | Asteraceae
|
| ENGEL | Engelmannia Gray ex Nutt. | Engelmann's daisy | Asteraceae
|
| ENAC2 | Enhalus acoroides L.C. Rich. ex Steud. | | Hydrocharitaceae
|
| ENHAL | Enhalus L.C. Rich. | | Hydrocharitaceae
|
| ENAXL | Enicostema axillare (Lam.) A. Raynal ssp. littorale auct. non (Blume) A. Raynal | Enicostema verticillatum | Gentianaceae
|
| ENLI | Enicostema littorale auct. non Blume | Enicostema verticillatum | Gentianaceae
|
| ENVE | Enicostema verticillatum (L.) Engl. ex Gilg | whitehead | Gentianaceae
|
| ENICO | Enicostema Blume | whitehead | Gentianaceae
|
| ENDE | Enneapogon desvauxii Desv. ex Beauv. | nineawn pappusgrass | Poaceae
|
| ENMO | Enneapogon mollis Lehm. | soft feather pappusgrass | Poaceae
|
| ENNEA | Enneapogon Desv. ex Beauv. | feather pappusgrass | Poaceae
|
| ENED | Ensete edule Bruce ex Horan. | Ensete ventricosum | Musaceae
|
| ENVE2 | Ensete ventricosum (Welw.) Cheeseman | Abyssinian banana | Musaceae
|
| ENSET | Ensete Horan. | ensete | Musaceae
|
| ENAB | Entada abyssinica Steudel ex A. Rich. | Abyssinia entada | Fabaceae
|
| ENGI | Entada gigas (L.) Fawcett & Rendle | nicker bean | Fabaceae
|
| ENPH | Entada phaseoloides (L.) Merr. | St. Thomas bean | Fabaceae
|
| ENPO2 | Entada polyphylla Benth. | Entada polystachya var. polyphylla | Fabaceae
|
| ENPOP | Entada polystachya (L.) DC. var. polyphylla (Benth.) Barneby | callingcard vine | Fabaceae
|
| ENPO4 | Entada polystachya (L.) DC. | callingcard vine | Fabaceae
|
| ENTAD2 | Entada Adans. | callingcard vine | Fabaceae
|
| ENPO | Entadopsis polyphylla (Benth.) Britt. | Entada polystachya var. polyphylla | Fabaceae
|
| ENAR2 | Entelea arborescens R. Br. | | Tiliaceae
|
| ENTEL | Entelea R. Br. | entelea | Tiliaceae
|
| ENCA2 | Enterographa carnea (Eckf.) R. C. Harris | Mazosia ocellata | Roccellaceae
|
| ENLE4 | Enterographa lecanoroides R. C. Harris | | Opegraphaceae
|
| ENQU | Enterographa quassiicola Fee | | Opegraphaceae
|
| ENZO | Enterographa zonata (Korber) Kallsten | | Opegraphaceae
|
| ENTER4 | Enterographa Fee | enterographa | Opegraphaceae
|
| ENCO2 | Enterolobium contortisiliquum (Vell.) Morong | pacara earpod tree | Fabaceae
|
| ENCY | Enterolobium cyclocarpum (Jacq.) Griseb. | monkeysoap | Fabaceae
|
| ENTER | Enterolobium Mart. | enterolobium | Fabaceae
|
| ENCH | Enteropogon chlorideus (J. Presl) W.D. Clayton | buryseed umbrellagrass | Poaceae
|
| ENPR | Enteropogon prieurii (Kunth) W.D. Clayton | Prieur's umbrellagrass | Poaceae
|
| ENTER2 | Enteropogon Nees | unbrellagrass | Poaceae
|
| ENTR | Enterosora trifurcata (L.) Bishop | threefork polypody | Grammitidaceae
|
| ENTER3 | Enterosora J.G. Baker | threefork polypody | Grammitidaceae
|
| ENBE | Entodon beyrichii (Schwaegr.) C. M�ll. | Beyrich's entodon moss | Entodontaceae
|
| ENBR3 | Entodon brevisetus (Hook. & Wils. in Wils.) Lindb. | entodon moss | Entodontaceae
|
| ENCH2 | Entodon challengeri (Par.) Card. | Entodon compressus | Entodontaceae
|
| ENCL | Entodon cladorrhizans (Hedw.) C. M�ll. | entodon moss | Entodontaceae
|
| ENCO4 | Entodon compressus (Hedw.) C. M�ll. | compressed entodon moss | Entodontaceae
|
| ENCO70 | Entodon concinnus (De Not.) Par. | entodon moss | Entodontaceae
|
| ENDR3 | Entodon drummondii (Sull.) Jaeg. | Entodon macropodus | Entodontaceae
|
| ENER | Entodon erythropus Mitt. | Entodon beyrichii | Entodontaceae
|
| ENEX | Entodon expallens C. M�ll. & Kindb. in Mac. & Kindb. | Hypnum pratense | Hypnaceae
|
| ENHA2 | Entodon hampeanus C. M�ll. | Hampe's entodon moss | Entodontaceae
|
| ENMA2 | Entodon macropodus (Hedw.) C. M�ll. | entodon moss | Entodontaceae
|