| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| LEAR15 | Leptogium arcticum P. M. Jorg. | arctic skin lichen | Collemataceae
|
| LEAR25 | Leptogium arizonicum Zahlbr. | Leptogium juniperinum | Collemataceae
|
| LEAR16 | Leptogium arsenei Sierk | Arsene's skin lichen | Collemataceae
|
| LEAU8 | Leptogium austroamericanum (Malme) C. W. Dodge | Austroamerican skin lichen | Collemataceae
|
| LEAZ | Leptogium azureum (Sw.) Mont. | blue skin lichen | Collemataceae
|
| LEBR14 | Leptogium brebissonii Mont. | skin lichen | Collemataceae
|
| LEBU4 | Leptogium burgessii (L.) Mont. | Burgess' skin lichen | Collemataceae
|
| LEBUH2 | Leptogium burnetiae Dodge var. hirsutum (Sierk) P. M. Jorg. | Leptogium hirsutum | Collemataceae
|
| LEBU5 | Leptogium burnetiae C. W. Dodge | Burnet's skin lichen | Collemataceae
|
| LEBY | Leptogium byssinum (Hoffm.) Zwackh ex Nyl. | skin lichen | Collemataceae
|
| LECA51 | Leptogium caesiellum Tuck. | Leptogium byssinum | Collemataceae
|
| LECA52 | Leptogium caesium (Ach.) Vainio | Leptogium cyanescens | Collemataceae
|
| LECA61 | Leptogium californicum Tuck. | California skin lichen | Collemataceae
|
| LECH11 | Leptogium chloromelum (Sw. ex Ach.) Nyl. | skin lichen | Collemataceae
|
| LECO23 | Leptogium contortum Sierk | contorted skin lichen | Collemataceae
|
| LECO61 | Leptogium corniculatum (Hoffm.) Minks | skin lichen | Collemataceae
|
| LECO24 | Leptogium corticola (Taylor) Tuck. | skin lichen | Collemataceae
|
| LECR10 | Leptogium crenatellum (Nyl.) Tuck. | Leptogium rivulare | Collemataceae
|
| LECR6 | Leptogium crenatulum (Nyl.) Vainio | crenate skin lichen | Collemataceae
|
| LECY60 | Leptogium cyanescens (Rabenh.) Korber | skin lichen | Collemataceae
|
| LEDA5 | Leptogium dactylinum Tuck. | skin lichen | Collemataceae
|
| LEDE13 | Leptogium denticulatum Tuck. | toothed skin lichen | Collemataceae
|
| LEDI15 | Leptogium digitatum (A. Massal.) Zahlbr. | finger skin lichen | Collemataceae
|
| LEER5 | Leptogium erectum Sierk | erect skin lichen | Collemataceae
|
| LEFL12 | Leptogium floridanum Sierk | Florida skin lichen | Collemataceae
|
| LEFU13 | Leptogium furfuraceum (Harm.) Sierk | skin lichen | Collemataceae
|
| LEFU14 | Leptogium fusisporum (Tuck.) C. W. Dodge | skin lichen | Collemataceae
|
| LEGE60 | Leptogium gelatinosum (With.) J. R. Laundon | gelatinous skin lichen | Collemataceae
|
| LEHI60 | Leptogium hirsutum Sierk | hairy skin lichen | Collemataceae
|
| LEHY9 | Leptogium hypotrachynum Mull. Arg. | skin lichen | Collemataceae
|
| LEIM5 | Leptogium imbricatum P. M. Jorg. | skin lichen | Collemataceae
|
| LEIN14 | Leptogium inflexum Nyl. | Leptogium burgessii | Collemataceae
|
| LEIN26 | Leptogium intermedium (Arnold) Arnold | skin lichen | Collemataceae
|
| LEIS2 | Leptogium isidiosellum (Riddle) Sierk | skin lichen | Collemataceae
|
| LEJU2 | Leptogium juniperinum Tuck. | juniper skin lichen | Collemataceae
|
| LELA18 | Leptogium laceroides (de Lesd.) P. M. Jorg. | skin lichen | Collemataceae
|
| LELI60 | Leptogium lichenoides (L.) Zahlbr. | skin lichen | Collemataceae
|
| LELI12 | Leptogium lividofuscum (Florke ex Schlecht.) Flotow | Leptogium tenuissimum | Collemataceae
|
| LEMA16 | Leptogium marginellum (Sw.) Gray | skin lichen | Collemataceae
|
| LEMI19 | Leptogium microstictum Vainio | skin lichen | Collemataceae
|
| LEMI20 | Leptogium milligranum Sierk | skin lichen | Collemataceae
|
| LEMI21 | Leptogium minutissimum (Florke) Fr. | Leptogium subtile | Collemataceae
|
| LENA5 | Leptogium nanum Herre | Leptogium tenuissimum | Collemataceae
|
| LEPA36 | Leptogium palmatulum (Hudson) Mont. | Leptogium corniculatum | Collemataceae
|
| LEPA43 | Leptogium papillosum (de Lesd.) C. W. Dodge | Leptogium furfuraceum | Collemataceae
|
| LEPA24 | Leptogium parculum Nyl. | skin lichen | Collemataceae
|
| LEPE21 | Leptogium perminutum Fink | Leptogium tenuissimum | Collemataceae
|
| LEPH5 | Leptogium phyllocarpum (Pers.) Mont. | skin lichen | Collemataceae
|
| LEPI10 | Leptogium pilosellum G. Merr. | Leptochidium albociliatum | Placynthiaceae
|
| LEPL7 | Leptogium platynum (Tuck.) Herre | skin lichen | Collemataceae
|
| LEPL12 | Leptogium plectenchymum Fink | Leptogium juniperinum | Collemataceae
|
| LEPL8 | Leptogium plicatile (Ach.) Leighton | skin lichen | Collemataceae
|
| LEPO19 | Leptogium polycarpum P. M. Jorg. & Goward | skin lichen | Collemataceae
|
| LERI2 | Leptogium rivale Tuck. | skin lichen | Collemataceae
|
| LERI3 | Leptogium rivulare (Ach.) Mont. | skin lichen | Collemataceae
|
| LERU10 | Leptogium rugosum Sierk | rugose skin lichen | Collemataceae
|
| LESA60 | Leptogium saturninum (Dickson) Nyl. | Saturn skin lichen | Collemataceae
|
| LESC13 | Leptogium schraderi (Ach.) Nyl. | skin lichen | Collemataceae
|
| LESE10 | Leptogium sessile Vainio | sessile skin lichen | Collemataceae
|
| LESI7 | Leptogium sinuatum (Hudson) A. Massal. | Leptogium gelatinosum | Collemataceae
|
| LEST15 | Leptogium stipitatum Vainio | stipitate skin lichen | Collemataceae
|
| LESU42 | Leptogium subaridum P. M. Jorg. & Goward | skin lichen | Collemataceae
|
| LESU43 | Leptogium subtile (Schrader) Torss. | skin lichen | Collemataceae
|
| LETE12 | Leptogium tenuissimum (Dickson) Korber | skin lichen | Collemataceae
|
| LETE13 | Leptogium teretiusculum (Wallr.) Arnold | terete skin lichen | Collemataceae
|
| LETR10 | Leptogium tremelloides auct. | Leptogium cyanescens | Collemataceae
|
| LEPTO14 | Leptogium (Ach.) Gray | skin lichen | Collemataceae
|
| LETE5 | Leptoglossis texana (Torr.) Gray | Hunzikeria texana | Solanaceae
|
| LEAN4 | Leptoglottis angustisiliqua Britt. & Rose | Mimosa microphylla | Fabaceae
|
| LECH4 | Leptoglottis chapmanii Small ex Britt. & Rose | Mimosa microphylla | Fabaceae
|
| LEFL7 | Leptoglottis floridana (Chapman) Small ex Britt. & Rose | Mimosa quadrivalvis var. floridana | Fabaceae
|
| LEHY3 | Leptoglottis hystricina Small ex Britt. & Rose | Mimosa hystricina | Fabaceae
|
| LEMI8 | Leptoglottis microphylla (Dry.) Britt. & Rose | Mimosa microphylla | Fabaceae
|
| LENE17 | Leptoglottis nelsonii Britt. & Rose | Mimosa quadrivalvis var. nelsonii | Fabaceae
|
| LENU6 | Leptoglottis nuttallii DC. | Mimosa nuttallii | Fabaceae
|
| LEOC2 | Leptoglottis occidentalis (Woot. & Standl.) Britt. | Mimosa rupertiana | Fabaceae
|
| LEPIA2 | Leptogramma pilosa (Mart. & Gal.) Underwood var. alabamensis (Crawford) Wherry | Thelypteris pilosa var. alabamensis | Thelypteridaceae
|
| LEPI4 | Leptogramma pilosa sensu (Mart. & Gal.) Underwood p.p. | Thelypteris pilosa var. alabamensis | Thelypteridaceae
|
| LESH4 | Leptohymenium sharpii (Crum & Anderson) Buck & Crum | Sharp's leptohymenium moss | Hylocomiaceae
|
| LEPTO18 | Leptohymenium Schwaegr. | leptohymenium moss | Hylocomiaceae
|
| LEEL14 | Leptolejeunea elliptica (Lehm. & Lindenb.) Schiffn. | | Lejeuneaceae
|
| LEPTO9 | Leptolejeunea (Spruce) Schiffn. | | Lejeuneaceae
|
| LEAR8 | Leptoloma arenicola Swallen | Digitaria arenicola | Poaceae
|
| LECOA | Leptoloma cognatum (J.A. Schultes) Chase var. arenicola (Swallen) Gould | Digitaria arenicola | Poaceae
|
| LECO | Leptoloma cognatum (J.A. Schultes) Chase | Digitaria cognata var. cognata | Poaceae
|
| LEFI4 | Leptopoda fimbriata Torr. & Gray | Helenium drummondii | Asteraceae
|
| LEAU10 | Leptopterigynandrum austro-alpinum C. M�ll. | alpine leptopterigynandrum moss | Leskeaceae
|
| LEPTO19 | Leptopterigynandrum C. M�ll. | leptopterigynandrum moss | Leskeaceae
|
| LEPH11 | Leptopus phyllanthoides (Nutt.) G.L. Webster | Missouri maidenbush | Euphorbiaceae
|
| LEPTO20 | Leptopus Dcne. | maidenbush | Euphorbiaceae
|
| LEAT6 | Leptorhaphis atomaria (Ach.) Szat. | birchbark dot lichen | Arthopyreniaceae
|
| LECO25 | Leptorhaphis contorta Degel. | contorted birchbark dot lichen | Arthopyreniaceae
|
| LEEP4 | Leptorhaphis epidermidis (Ach.) Th. Fr. | birchbark dot lichen | Arthopyreniaceae
|
| LELU8 | Leptorhaphis lucida Korber | birchbark dot lichen | Arthopyreniaceae
|
| LEPA25 | Leptorhaphis parmeca (A. Massal.) Korber | birchbark dot lichen | Arthopyreniaceae
|
| LEPTO15 | Leptorhaphis Korber | birchbark dot lichen | Arthopyreniaceae
|
| LECU11 | Leptoscyphus cuneifolius (Hook.) Mitt. | | Geocalycaceae
|
| LEPTO10 | Leptoscyphus Mitt. | | Geocalycaceae
|
| LESO2 | Leptoseris sonchoides Nutt. | Malacothrix sonchoides | Asteraceae
|
| LEFL3 | Leptospermum flavescens Sm. | common teatree | Myrtaceae
|
| LELA12 | Leptospermum laevigata (Soland. ex Gaertn.) F. Muell. | coastal teatree | Myrtaceae
|