| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| LESE4 | Lepidium serra Mann | anaunau | Brassicaceae
|
| LESM | Lepidium smithii Hook. | Lepidium heterophyllum | Brassicaceae
|
| LESO | Lepidium sordidum Gray | sordid pepperweed | Brassicaceae
|
| LESQ2 | Lepidium squamatum Forsk. | Coronopus squamatus | Brassicaceae
|
| LEST2 | Lepidium strictum (S. Wats.) Rattan | upright pepperweed | Brassicaceae
|
| LETE7 | Lepidium texanum Buckl. | Lepidium densiflorum var. densiflorum | Brassicaceae
|
| LETH2 | Lepidium thurberi Woot. | Thurber's pepperweed | Brassicaceae
|
| LEVIM | Lepidium virginicum L. var. medium (Greene) C.L. Hitchc. | medium pepperweed | Brassicaceae
|
| LEVIM2 | Lepidium virginicum L. var. menziesii (DC.) C.L. Hitchc. | Menzies' pepperweed | Brassicaceae
|
| LEVIP | Lepidium virginicum L. var. pubescens (Greene) Thellung | hairy pepperweed | Brassicaceae
|
| LEVIR | Lepidium virginicum L. var. robinsonii (Thellung) C.L. Hitchc. | Robinson's pepperweed | Brassicaceae
|
| LEVIT | Lepidium virginicum L. var. typicum C.L. Hitchc. | Lepidium virginicum var. virginicum | Brassicaceae
|
| LEVIV2 | Lepidium virginicum L. var. virginicum | Virginia pepperweed | Brassicaceae
|
| LEVI3 | Lepidium virginicum L. | Virginia pepperweed | Brassicaceae
|
| LEPID | Lepidium L. | pepperweed | Brassicaceae
|
| LEDE19 | Lepidoma demissum (Rutstr.) Choisy | Lecidoma demissum | Psoraceae
|
| LEPO13 | Lepidopilum polytrichoides (Hedw.) Brid. | lepidopilum moss | Callicostaceae
|
| LEPID4 | Lepidopilum (Brid.) Brid. | lepidopilum moss | Callicostaceae
|
| LEBU2 | Lepidospartum burgessii B.L. Turner | Burgess' broomsage | Asteraceae
|
| LELA4 | Lepidospartum latisquamum S. Wats. | Nevada broomsage | Asteraceae
|
| LESQP | Lepidospartum squamatum (Gray) Gray var. palmeri (Gray) L.C. Wheeler | Lepidospartum squamatum | Asteraceae
|
| LESQ | Lepidospartum squamatum (Gray) Gray | California broomsage | Asteraceae
|
| LEPID2 | Lepidospartum (Gray) Gray | broomsage | Asteraceae
|
| LESU3 | Lepidotheca suaveolens (Pursh) Nutt. | Matricaria discoidea | Asteraceae
|
| LEAL10 | Lepidotis alopecuroides (L.) Rothm. | Lycopodiella alopecuroides | Lycopodiaceae
|
| LECE2 | Lepidotis cernua (L.) Beauv. | Lycopodiella cernua var. cernua | Lycopodiaceae
|
| LEIN7 | Lepidotis inundata (L.) C. Borner | Lycopodiella inundata | Lycopodiaceae
|
| LEFI13 | Lepidozia filamentosa (Lehm. & Lindenb.) Lindenb. | | Lepidoziaceae
|
| LERE17 | Lepidozia reptans (L.) Dumort. | | Lepidoziaceae
|
| LESA23 | Lepidozia sandvicensis Lindenb. | | Lepidoziaceae
|
| LEPID3 | Lepidozia (Dumort.) Dumort nom. cons. | | Lepidoziaceae
|
| LEPO16 | Lepinia ponapensis Hosokawa | | Apocynaceae
|
| LEPIN | Lepinia Decaisne | | Apocynaceae
|
| LEAR30 | Lepironia articulata (Retz.) Domin | | Cyperaceae
|
| LEPIR | Lepironia Pers. | | Cyperaceae
|
| LETH6 | Lepisorus thunbergianus (Kaulfuss) Ching | weeping fern | Polypodiaceae
|
| LEPIS | Lepisorus (J. Sm.) Ching | lepisorus | Polypodiaceae
|
| LEAE5 | Lepraria aeruginosa auct. | Lepraria incana | Uncertain Lichen Family
|
| LEAR24 | Lepraria arctica (Lynge) Wetmore | Leproloma vouauxii | Pannariaceae
|
| LEBO8 | Lepraria borealis Lohtander & Tonsberg | dust lichen | Uncertain Lichen Family
|
| LECA56 | Lepraria cacuminum (A. Massal.) Lohtander | dust lichen | Uncertain Lichen Family
|
| LECA57 | Lepraria caesioalba (de Lesd.) J. R. Laundon | dust lichen | Uncertain Lichen Family
|
| LECA50 | Lepraria candelaris (L.) Fr. | Chrysothrix candelaris | Chrysotrichaceae
|
| LECH15 | Lepraria chlorina (Ach.) Ach. | Chrysothrix chlorina | Chrysotrichaceae
|
| LECI14 | Lepraria citrina (Schaerer) Rabenh. | Chrysothrix candelaris | Chrysotrichaceae
|
| LECRI | Lepraria crassissima (Hue) Lettau var. isidiata Llimona | dust lichen | Uncertain Lichen Family
|
| LECR5 | Lepraria crassissima (Hue) Lettau | dust lichen | Uncertain Lichen Family
|
| LEEB | Lepraria eburnea J. R. Laundon | dust lichen | Uncertain Lichen Family
|
| LEFI7 | Lepraria finkii (de Lesd.) R. C. Harris | Lepraria lobificans | Uncertain Lichen Family
|
| LEFL17 | Lepraria flava (Schaerer) Sm. | Chrysothrix candelaris | Chrysotrichaceae
|
| LEFR10 | Lepraria frigida J. R. Laundon | dust lichen | Uncertain Lichen Family
|
| LEIN13 | Lepraria incana (L.) Ach. | dust lichen | Uncertain Lichen Family
|
| LELE19 | Lepraria lesdainii (Hue) R. C. Harris | Lesdain's dust lichen | Uncertain Lichen Family
|
| LELO6 | Lepraria lobificans Nyl. | dust lichen | Uncertain Lichen Family
|
| LEME18 | Lepraria membranacea (Dickson) Vainio | Leproloma membranaceum | Pannariaceae
|
| LENE14 | Lepraria neglecta (Nyl.) Erichsen | dust lichen | Uncertain Lichen Family
|
| LENI8 | Lepraria nivalis J. R. Laundon | dust lichen | Uncertain Lichen Family
|
| LERI7 | Lepraria rigidula (de Lesd.) Tonsberg | dust lichen | Uncertain Lichen Family
|
| LEVO3 | Lepraria vouauxii (Hue) R. C. Harris | Leproloma vouauxii | Pannariaceae
|
| LEZO2 | Lepraria zonata Brodo | Lepraria caesioalba | Uncertain Lichen Family
|
| LEPRA | Lepraria Ach. | dust lichen | Uncertain Lichen Family
|
| LEAL19 | Leprocaulon albicans (Th. Fr.) Nyl. ex Hue | mealy lichen | Uncertain Lichen Family
|
| LEAR14 | Leprocaulon arbuscula (Nyl.) Nyl. | mealy lichen | Uncertain Lichen Family
|
| LEGR15 | Leprocaulon gracilescens (Nyl.) Lamb & Ward | mealy lichen | Uncertain Lichen Family
|
| LEMI18 | Leprocaulon microscopicum (Vill.) Gams ex D. Hawksw. | mealy lichen | Uncertain Lichen Family
|
| LESU60 | Leprocaulon subalbicans (Lamb) Lamb & Ward | mealy lichen | Uncertain Lichen Family
|
| LEPRO2 | Leprocaulon Nyl. ex Lamy | mealy lichen | Uncertain Lichen Family
|
| LEAN9 | Leproloma angardianum (Ovstedal) J. R. Laundon | Lepraria cacuminum | Uncertain Lichen Family
|
| LECA58 | Leproloma cacuminum (A. Massal.) J. R. Laundon | Lepraria cacuminum | Uncertain Lichen Family
|
| LEDIC | Leproloma diffusum J. R. Laundon var. chrysodetoides J. R. Laundon | | Pannariaceae
|
| LEDID2 | Leproloma diffusum J. R. Laundon var. diffusum | | Pannariaceae
|
| LEDI27 | Leproloma diffusum J. R. Laundon | | Pannariaceae
|
| LEME13 | Leproloma membranaceum (Dickson) Vainio | | Pannariaceae
|
| LEVO | Leproloma vouauxii (Hue) J. R. Laundon | | Pannariaceae
|
| LEPRO3 | Leproloma Nyl. ex Crombie | leproloma | Pannariaceae
|
| LECH10 | Leproplaca chrysodeta (Vainio ex Rasanen) J. R. Laundon | Caloplaca chrysodeta | Teloschistaceae
|
| LEVI14 | Leptamnium virginianum (L.) Raf. | Epifagus virginiana | Orobanchaceae
|
| LEVI12 | Leptandra virginica (L.) Nutt. | Veronicastrum virginicum | Scrophulariaceae
|
| LEPY | Leptarrhena pyrolifolia (D. Don) R. Br. ex Ser. | fireleaf leptarrhena | Saxifragaceae
|
| LEPTA | Leptarrhena R. Br. | leptarrhena | Saxifragaceae
|
| LEAI | Leptasea aizoides (L.) Haw. | Saxifraga aizoides | Saxifragaceae
|
| LEHI6 | Leptasea hirculus (L.) Small | Saxifraga hirculus ssp. hirculus | Saxifragaceae
|
| LETR6 | Leptasea tricuspidata (Rottb.) Haw. | Saxifraga tricuspidata | Saxifragaceae
|
| LEBO3 | Leptilon bonariense (L.) Small | Conyza bonariensis | Asteraceae
|
| LECA16 | Leptilon canadense (L.) Britt. | Conyza canadensis var. canadensis | Asteraceae
|
| LECH3 | Leptilon chinense (Jacq.) Britt. | Conyza apurensis | Asteraceae
|
| LEDI8 | Leptilon divaricatum (Michx.) Raf. | Conyza ramosissima | Asteraceae
|
| LEIN8 | Leptilon integrifolium Woot. & Standl. | Laennecia schiedeana | Asteraceae
|
| LELI3 | Leptilon linifolium (Willd.) Small | Conyza bonariensis | Asteraceae
|
| LEPU9 | Leptilon pusillum (Nutt.) Britt. | Conyza canadensis var. pusilla | Asteraceae
|
| LEPYF | Leptobryum pyriforme (Hedw.) Wils. var. flagelliferum Holz. | Leptobryum pyriforme | Bryaceae
|
| LEPY70 | Leptobryum pyriforme (Hedw.) Wils. | leptobryum moss | Bryaceae
|
| LEPTO11 | Leptobryum (Bruch & Schimp. in B.S.G.) Wils. | leptobryum moss | Bryaceae
|
| LEGR6 | Leptocereus grantianus Britt. | sebucan | Cactaceae
|
| LEQU | Leptocereus quadricostatus (Bello) Britt. & Rose | pitahaya | Cactaceae
|
| LEPTO7 | Leptocereus (Berger) Britt. & Rose | leptocereus | Cactaceae
|
| LEAL20 | Leptochidium albociliatum (Desmaz.) Choisy | | Placynthiaceae
|
| LEPTO13 | Leptochidium Choisy | leptochidium | Placynthiaceae
|
| LEAL8 | Leptochilus alienus (Sw.) C. Christens. | Bolbitis aliena | Dryopteridaceae
|
| LECL | Leptochilus cladorrhizans (Spreng.) Maxon | Bolbitis portoricensis | Dryopteridaceae
|
| LEGU | Leptochilus guianensis (Aubl.) C. Christens. | Lomagramma guianensis | Dryopteridaceae
|