| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| LETE60 | Lecidea tessellata Florke | | Lecideaceae
|
| LETE21 | Lecidea texana W. A. Weber | Xanthopsorella texana | Catillariaceae
|
| LETH9 | Lecidea theodori Lynge | | Lecideaceae
|
| LETO8 | Lecidea tornoensis Nyl. | Japewia tornoensis | Bacidiaceae
|
| LETO7 | Lecidea torquens Mull. Arg. | | Lecideaceae
|
| LETR9 | Lecidea trochodes (Taylor ex Leighton) Crombie | Rimularia limborina | Rimulariaceae
|
| LETR8 | Lecidea truckeei Herre | | Lecideaceae
|
| LETU5 | Lecidea tumida A. Massal. | Porpidia tuberculosa | Porpidiaceae
|
| LETU4 | Lecidea turgidula Fr. | Biatora turgidula | Bacidiaceae
|
| LEUL | Lecidea uliginosa (Schrader) Ach. | Placynthiella uliginosa | Trapeliaceae
|
| LEUL2 | Lecidea ultima Th. Fr. | Cephalophysis leucospila | Teloschistaceae
|
| LEUM4 | Lecidea umbonata (Hepp) Mudd | | Lecideaceae
|
| LEVA9 | Lecidea vacciniicola Tonsberg | Biatora vacciniicola | Bacidiaceae
|
| LEVA7 | Lecidea varians Ach. | Pyrrhospora varians | Lecanoraceae
|
| LEVE10 | Lecidea vernalis (L.) Ach. | Biatora vernalis | Bacidiaceae
|
| LEVI16 | Lecidea violascens H. Magn. | | Lecideaceae
|
| LEVI17 | Lecidea virginiensis Calk. & Nyl. | | Lecideaceae
|
| LEVI19 | Lecidea viridans (Flotow) Lamy | Lecidella viridans | Lecanoraceae
|
| LEVI20 | Lecidea viridescens (Schrader) Ach. | Trapeliopsis viridescens | Trapeliaceae
|
| LEVI21 | Lecidea vitellinaria Nyl. | Carbonea vitellinaria | Lecanoraceae
|
| LEVO2 | Lecidea vorticosa (Florke) Korber | Carbonea vorticosa | Lecanoraceae
|
| LEVU4 | Lecidea vulgata Zahlbr. | Lecidella stigmatea | Lecanoraceae
|
| LEWA4 | Lecidea wallrothii Florke ex Sprengel | Trapeliopsis wallrothii | Trapeliaceae
|
| LEWA5 | Lecidea washingtonensis H. Magn. | Lecidea cascadensis | Lecideaceae
|
| LEWU2 | Lecidea wulfenii (Hepp) Arnold | Lecidella wulfenii | Lecanoraceae
|
| LEXA3 | Lecidea xanthococca Sommerf. | Hypocenomyce xanthococca | Lecideaceae
|
| LEXA2 | Lecidea xanthococcoides Zahlbr. | | Lecideaceae
|
| LEYP | Lecidea ypocrita A. Massal. | Farnoldia hypocrita | Porpidiaceae
|
| LECID2 | Lecidea Ach. | lecidea | Lecideaceae
|
| LEAL33 | Lecidella alaiensis (Vainio) Hertel | Lecidella patavina | Lecanoraceae
|
| LEAN8 | Lecidella anomaloides (A. Massal.) Hertel & R. Kilias | | Lecanoraceae
|
| LEAS2 | Lecidella asema (Nyl.) Korber | | Lecanoraceae
|
| LEBU3 | Lecidella bullata Korber | | Lecanoraceae
|
| LECA35 | Lecidella carpathica Korber | | Lecanoraceae
|
| LECH17 | Lecidella chodatii (Sampaio) Knoph & Leuckert | | Lecanoraceae
|
| LEDI14 | Lecidella dimelaenophila Hertel | | Lecanoraceae
|
| LEEF | Lecidella effugiens (Nilson) Knoph & Hertel | | Lecanoraceae
|
| LEEL7 | Lecidella elaeochroma (Ach.) Hazsl. | | Lecanoraceae
|
| LEEL8 | Lecidella elaeochromoides (Nyl.) Knoph & Hertel | Lecidella asema | Lecanoraceae
|
| LEEN4 | Lecidella enteroleucella (Nyl.) Hertel | | Lecanoraceae
|
| LEEU | Lecidella euphorea (Florke) Hertel | | Lecanoraceae
|
| LEFL11 | Lecidella flavosorediata (Vezda) Hertel & Leuckert | | Lecanoraceae
|
| LEGL16 | Lecidella glomerulosa (DC.) Choisy | Lecidella euphorea | Lecanoraceae
|
| LEGO6 | Lecidella goniophila auct. | Lecidella anomaloides | Lecanoraceae
|
| LEGR14 | Lecidella granulata (H. Magn.) R. C. Harris | | Lecanoraceae
|
| LEIN20 | Lecidella inamoena (Mull. Arg.) Hertel | Lecidella patavina | Lecanoraceae
|
| LEIN21 | Lecidella incongruella (Vainio) Hertel & Leuckert | Lecidella effugiens | Lecanoraceae
|
| LELA33 | Lecidella latypiza (Nyl.) Choisy | | Lecanoraceae
|
| LELA35 | Lecidella laureri (Hepp) Korber | | Lecanoraceae
|
| LEME21 | Lecidella meiococca (Nyl.) Leuckert & Hertel | | Lecanoraceae
|
| LEPA23 | Lecidella patavina (A. Massal.) Knoph & Leuckert | | Lecanoraceae
|
| LEPL6 | Lecidella placidensis (H. Magn.) R. C. Harris | Lecanora placidensis | Lecanoraceae
|
| LEPR17 | Lecidella prasinula (Wedd.) Hertel | Lecidella scabra | Lecanoraceae
|
| LEPU13 | Lecidella pulveracea (Schaerer) Sydow | | Lecanoraceae
|
| LESC8 | Lecidella scabra (Taylor) Hertel & Leuckert | | Lecanoraceae
|
| LESP8 | Lecidella spitsbergensis (Lynge) Hertel & Leuckert | Lecidella patavina | Lecanoraceae
|
| LEST14 | Lecidella stigmatea (Ach.) Hertel & Leuckert | | Lecanoraceae
|
| LESU19 | Lecidella subauriculata (de Lesd.) | | Lecanoraceae
|
| LESUE | Lecidella subincongrua (Nyl.) Hertel & Leuckert var. elaeochromoides (Nyl.) Hertel & Leuckert | Lecidella asema | Lecanoraceae
|
| LEVI18 | Lecidella viridans (Flotow) Korber | | Lecanoraceae
|
| LEWU | Lecidella wulfenii (Hepp) Korber | | Lecanoraceae
|
| LECID3 | Lecidella Korber | lecidella | Lecanoraceae
|
| LEDE12 | Lecidoma demissum (Rustr.) Gotth. Schneider & Hertel | | Psoraceae
|
| LECID4 | Lecidoma Gotth. Schneider & Hertel | lecidoma | Psoraceae
|
| LEGL21 | Leciographa glaucomaria (Nyl.) H. Olivier | Opegrapha glaucomaria | Opegraphaceae
|
| LEIN27 | Leciographa inspersa (Tul.) Rehm. | Dactylospora parasitica | Dactylosporaceae
|
| LELA17 | Leciographa lamyi (O. J. Rich. ex Nyl.) Sacc. & D. Sacc. | Opegrapha lamyi | Opegraphaceae
|
| LEPA35 | Leciographa parasitica A. Massal. | Dactylospora parasitica | Dactylosporaceae
|
| LEPE25 | Leciographa pertusariicola (Willey ex Tuck.) Fink | Dactylospora pertusariicola | Dactylosporaceae
|
| LEUR2 | Leciographa urceolata (Fr.) Korber | Dactylospora urceolata | Dactylosporaceae
|
| LEFI6 | Leciophysma finmarkicum Th. Fr. | | Collemataceae
|
| LEFU12 | Leciophysma furfurascens (Nyl.) Gyelnik | | Collemataceae
|
| LECIO2 | Leciophysma Th. Fr. | leciophysma | Collemataceae
|
| LERE11 | Lecticula resupinata (B.D. Greene ex Bigelow) Barnh. | Utricularia resupinata | Lentibulariaceae
|
| LEEL13 | Lecythis elliptica Kunth | Lecythis minor | Lecythidaceae
|
| LEMI25 | Lecythis minor Jacq. | lecythis | Lecythidaceae
|
| LEOL5 | Lecythis ollaria Loefl. | lecythis | Lecythidaceae
|
| LEZA2 | Lecythis zabucajo Aublet | paradise nut | Lecythidaceae
|
| LECYT | Lecythis Loefl. | lecythis | Lecythidaceae
|
| LECO8 | Ledum �columbianum Piper (pro sp.) | | Ericaceae
|
| LEDE5 | Ledum decumbens (Ait.) Lodd. ex Steud. | Ledum palustre ssp. decumbens | Ericaceae
|
| LEGLA | Ledum glandulosum Nutt. ssp. australe C.L. Hitchc. | Ledum columbianum | Ericaceae
|
| LEGLC3 | Ledum glandulosum Nutt. ssp. columbianum (Piper) C.L. Hitchc. | Ledum columbianum | Ericaceae
|
| LEGLO | Ledum glandulosum Nutt. ssp. olivaceum C.L. Hitchc. | Ledum columbianum | Ericaceae
|
| LEGLC | Ledum glandulosum Nutt. var. californicum (Kellogg) C.L. Hitchc. | Ledum glandulosum | Ericaceae
|
| LEGLC4 | Ledum glandulosum Nutt. var. columbianum (Piper) C.L. Hitchc. | Ledum columbianum | Ericaceae
|
| LEGL | Ledum glandulosum Nutt. | western Labrador tea | Ericaceae
|
| LEGRG3 | Ledum groenlandicum Oeder ssp. glandulosum (Nutt.) A.& D. L�ve | Ledum glandulosum | Ericaceae
|
| LEGR | Ledum groenlandicum Oeder | bog Labrador tea | Ericaceae
|
| LEPAD | Ledum palustre L. ssp. decumbens (Ait.) Hult�n | marsh Labrador tea | Ericaceae
|
| LEPAG | Ledum palustre L. ssp. groenlandicum (Oeder) Hult�n | Ledum groenlandicum | Ericaceae
|
| LEPAD2 | Ledum palustre L. var. decumbens Ait. | Ledum palustre ssp. decumbens | Ericaceae
|
| LEPAL | Ledum palustre L. var. latifolium (Jacq.) Michx. | Ledum groenlandicum | Ericaceae
|
| LEPA11 | Ledum palustre L. | marsh Labrador tea | Ericaceae
|
| LEDUM | Ledum L. | Labrador tea | Ericaceae
|
| LEHE | Leersia hexandra Sw. | southern cutgrass | Poaceae
|
| LELE2 | Leersia lenticularis Michx. | catchfly grass | Poaceae
|
| LEMO | Leersia monandra Sw. | bunch cutgrass | Poaceae
|
| LEOR | Leersia oryzoides (L.) Sw. | rice cutgrass | Poaceae
|
| LEVIO | Leersia virginica Willd. var. ovata (Poir.) Fern. | Leersia virginica | Poaceae
|
| LEVI2 | Leersia virginica Willd. | whitegrass | Poaceae
|