| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| LOHU2 | Lotus humistratus Greene | foothill deervetch | Fabaceae
|
| LOIN6 | Lotus incanus (Torr.) Greene | woolly bird's-foot trefoil | Fabaceae
|
| LOIN8 | Lotus intricatus Eastw. | arid bird's-foot trefoil | Fabaceae
|
| LOJUB | Lotus junceus (Benth.) Greene var. biolettii (Greene) Ottley | Biolett's rush broom | Fabaceae
|
| LOJUJ | Lotus junceus (Benth.) Greene var. junceus | rush broom | Fabaceae
|
| LOJU2 | Lotus junceus (Benth.) Greene | rush broom | Fabaceae
|
| LOLO | Lotus longebracteatus Rydb. | Lotus plebeius | Fabaceae
|
| LOMA81 | Lotus macranthus Greene | Lotus grandiflorus var. macranthus | Fabaceae
|
| LOMEE | Lotus mearnsii (Britt.) Greene var. equisolensis J.L. Anderson | Mearns' bird's-foot trefoil | Fabaceae
|
| LOMEM | Lotus mearnsii (Britt.) Greene var. mearnsii | Mearns' bird's-foot trefoil | Fabaceae
|
| LOME | Lotus mearnsii (Britt.) Greene | Mearns' bird's-foot trefoil | Fabaceae
|
| LOMI | Lotus micranthus Benth. | desert deervetch | Fabaceae
|
| LONE5 | Lotus neoincanus Munz | Lotus incanus | Fabaceae
|
| LONE3 | Lotus neomexicanus Greene | Lotus plebeius | Fabaceae
|
| LONED2 | Lotus nevadensis (S. Wats.) Greene var. davidsonii (Greene) Isely | Davidson's bird's-foot trefoil | Fabaceae
|
| LONED | Lotus nevadensis (S. Wats.) Greene var. douglasii (Greene) Ottley | Douglas' bird's-foot trefoil | Fabaceae
|
| LONEN2 | Lotus nevadensis (S. Wats.) Greene var. nevadensis | Nevada bird's-foot trefoil | Fabaceae
|
| LONE4 | Lotus nevadensis (S. Wats.) Greene | Nevada bird's-foot trefoil | Fabaceae
|
| LONI2 | Lotus niveus Greene | Lotus argophyllus var. niveus | Fabaceae
|
| LONU5 | Lotus �nummularius (M.E. Jones) Tidestrom | Lotus plebeius | Fabaceae
|
| LONU4 | Lotus nuttallianus Greene | wire bird's-foot trefoil | Fabaceae
|
| LOOBC | Lotus oblongifolius (Benth.) Greene var. cupreus (Greene) Ottley | streambank bird's-foot trefoil | Fabaceae
|
| LOOBN | Lotus oblongifolius (Benth.) Greene var. nevadensis (Gray) Munz | Lotus oblongifolius var. oblongifolius | Fabaceae
|
| LOOBO2 | Lotus oblongifolius (Benth.) Greene var. oblongifolius | streambank bird's-foot trefoil | Fabaceae
|
| LOOBT | Lotus oblongifolius (Benth.) Greene var. torreyi (Gray) Ottley | Lotus oblongifolius var. oblongifolius | Fabaceae
|
| LOOB2 | Lotus oblongifolius (Benth.) Greene | streambank bird's-foot trefoil | Fabaceae
|
| LOORN | Lotus oroboides (Kunth) Ottley var. nanus (Gray) Isely | Lotus plebeius | Fabaceae
|
| LOORN2 | Lotus oroboides (Kunth) Ottley var. nummularius (M.E. Jones) Isely | Lotus plebeius | Fabaceae
|
| LOOR2 | Lotus oroboides auct. non (Kunth) Ottley | Lotus plebeius | Fabaceae
|
| LOPA81 | Lotus parviflorus Desf. | smallflower bird's-foot trefoil | Fabaceae
|
| LOPE80 | Lotus pedunculatus Cav. | big trefoil | Fabaceae
|
| LOPI2 | Lotus pinnatus Hook. | meadow bird's-foot trefoil | Fabaceae
|
| LOPL2 | Lotus plebeius (Brand) Barneby | New Mexico bird's-foot trefoil | Fabaceae
|
| LOPRJ | Lotus procumbens (Greene) Greene var. jepsonii (Ottley) Ottley | Jepson's deerweed | Fabaceae
|
| LOPRP | Lotus procumbens (Greene) Greene var. procumbens | silky deerweed | Fabaceae
|
| LOPR3 | Lotus procumbens (Greene) Greene | silky deerweed | Fabaceae
|
| LOPUG | Lotus purshianus F.E. & E.G. Clem. var. glaber (Nutt.) Munz | Lotus unifoliolatus var. unifoliolatus | Fabaceae
|
| LOPUH | Lotus purshianus F.E. & E.G. Clem. var. helleri (Britt.) Isely | Lotus unifoliolatus var. helleri | Fabaceae
|
| LOPU3 | Lotus purshianus F.E. & E.G. Clem. | Lotus unifoliolatus var. unifoliolatus | Fabaceae
|
| LORI3 | Lotus rigidus (Benth.) Greene | shrubby deervetch | Fabaceae
|
| LORU2 | Lotus rubellus (Nutt.) Greene | Lotus strigosus var. strigosus | Fabaceae
|
| LORU | Lotus rubriflorus H.K. Sharsmith | redflower bird's-foot trefoil | Fabaceae
|
| LOSAB2 | Lotus salsuginosus Greene ssp. brevivexillus (Ottley) Munz | Lotus salsuginosus var. brevivexillus | Fabaceae
|
| LOSAB | Lotus salsuginosus Greene var. brevivexillus Ottley | coastal bird's-foot trefoil | Fabaceae
|
| LOSAS | Lotus salsuginosus Greene var. salsuginosus | coastal bird's-foot trefoil | Fabaceae
|
| LOSA | Lotus salsuginosus Greene | coastal bird's-foot trefoil | Fabaceae
|
| LOSCB2 | Lotus scoparius (Nutt.) Ottley ssp. brevialatus (Ottley) Munz | Lotus scoparius var. brevialatus | Fabaceae
|
| LOSCT2 | Lotus scoparius (Nutt.) Ottley ssp. traskiae (Eastw. ex Noddin) Raven | Lotus dendroideus var. traskiae | Fabaceae
|
| LOSCB | Lotus scoparius (Nutt.) Ottley var. brevialatus Ottley | western bird's-foot trefoil | Fabaceae
|
| LOSCD | Lotus scoparius (Nutt.) Ottley var. dendroideus (Greene) Ottley | Lotus dendroideus var. dendroideus | Fabaceae
|
| LOSCP2 | Lotus scoparius (Nutt.) Ottley var. perplexans Hoover p.p. | Lotus benthamii | Fabaceae
|
| LOSCP2 | Lotus scoparius (Nutt.) Ottley var. perplexans Hoover p.p. | Lotus scoparius var. scoparius | Fabaceae
|
| LOSCS2 | Lotus scoparius (Nutt.) Ottley var. scoparius | common deerweed | Fabaceae
|
| LOSCV | Lotus scoparius (Nutt.) Ottley var. veatchii (Greene) Ottley | Lotus dendroideus var. veatchii | Fabaceae
|
| LOSC2 | Lotus scoparius (Nutt.) Ottley | common deerweed | Fabaceae
|
| LOSE4 | Lotus sericeus Pursh, non Moench | Lotus unifoliolatus var. unifoliolatus | Fabaceae
|
| LOSTO | Lotus stipularis (Benth.) Greene var. ottleyi Isely | Ottley's bird's-foot trefoil | Fabaceae
|
| LOSTS | Lotus stipularis (Benth.) Greene var. stipularis | balsam bird's-foot trefoil | Fabaceae
|
| LOSTS3 | Lotus stipularis (Benth.) Greene var. subglaber Ottley | Lotus aboriginus | Fabaceae
|
| LOST3 | Lotus stipularis (Benth.) Greene | balsam bird's-foot trefoil | Fabaceae
|
| LOSTH | Lotus strigosus (Nutt.) Greene var. hirtellus (Greene) Ottley | strigose bird's-foot trefoil | Fabaceae
|
| LOSTS2 | Lotus strigosus (Nutt.) Greene var. strigosus | strigose bird's-foot trefoil | Fabaceae
|
| LOSTT | Lotus strigosus (Nutt.) Greene var. tomentellus (Greene) Isely | strigose bird's-foot trefoil | Fabaceae
|
| LOST4 | Lotus strigosus (Nutt.) Greene | strigose bird's-foot trefoil | Fabaceae
|
| LOSU80 | Lotus subbiflorus Lag. | hairy bird's-foot trefoil | Fabaceae
|
| LOSU3 | Lotus subpinnatus auct. non Lag. | Lotus wrangelianus | Fabaceae
|
| LOTE4 | Lotus tenuis Waldst. & Kit. ex Willd. | narrowleaf bird's-foot trefoil | Fabaceae
|
| LOTE8 | Lotus tetragonolobus L. | Tetragonolobus purpureus | Fabaceae
|
| LOTO7 | Lotus tomentellus Greene | Lotus strigosus var. tomentellus | Fabaceae
|
| LOTO4 | Lotus torreyi (Gray) Greene | Lotus oblongifolius var. oblongifolius | Fabaceae
|
| LOUL | Lotus uliginosus Schkuhr | Lotus pedunculatus | Fabaceae
|
| LOUNH | Lotus unifoliolatus (Hook.) Benth. var. helleri (Britt.) Kartesz & Gandhi | Heller's bird's-foot trefoil | Fabaceae
|
| LOUNU | Lotus unifoliolatus (Hook.) Benth. var. unifoliolatus | American bird's-foot trefoil | Fabaceae
|
| LOUN | Lotus unifoliolatus (Hook.) Benth. | American bird's-foot trefoil | Fabaceae
|
| LOUT3 | Lotus utahensis Ottley | Utah bird's-foot trefoil | Fabaceae
|
| LOWR2 | Lotus wrangelianus Fisch. & C.A. Mey. | Chilean bird's-foot trefoil | Fabaceae
|
| LOWR | Lotus wrightii (Gray) Greene | Wright's deervetch | Fabaceae
|
| LOYO | Lotus yollabolliensis Munz | Yolla Bolly bird's-foot trefoil | Fabaceae
|
| LOTUS | Lotus L. | trefoil | Fabaceae
|
| LOTR3 | Louiseania triloba (Lindl.) Pachom. | Prunus triloba | Rosaceae
|
| LOVE | Lourea verspertilionis (L. f.) Desv. | Christia verspertilionis | Fabaceae
|
| LOAU2 | Lowellia aurea Gray | Thymophylla aurea var. aurea | Asteraceae
|
| LOCI5 | Loxospora cismonica (Beltram.) Hafeller | | Haematommataceae
|
| LOEL3 | Loxospora elatina (Ach.) A. Massal. | | Haematommataceae
|
| LOOC | Loxospora ochrophaea (Tuck.) R. C. Harris | | Haematommataceae
|
| LOPU5 | Loxospora pustulata (Brodo & Culb.) R. C. Harris | | Haematommataceae
|
| LOXOS | Loxospora A. Massal. | loxospora | Haematommataceae
|
| LOCO15 | Loxosporopsis corallifera Brodo, Henssen & Imahsug | | Uncertain Lichen Family
|
| LOXOS2 | Loxosporopsis Henssen | loxosporopsis | Uncertain Lichen Family
|
| LUIN6 | Luculia intermedia Hutchinson | Yunnan luculia | Rubiaceae
|
| LUCUL | Luculia Sweet | luculia | Rubiaceae
|
| LUCA20 | Lucuma caimito (Ruiz & Pavon) Roemer & Schultes | Pouteria caimito | Sapotaceae
|
| LUCA15 | Lucuma campechiana Kunth | Pouteria campechiana | Sapotaceae
|
| LUDO2 | Lucuma dominigensis Gaertn. f. | Pouteria dominigensis | Sapotaceae
|
| LUMA15 | Lucuma mammosa (L.) Gaertner f. | Manilkara zapota | Sapotaceae
|
| LUMA16 | Lucuma mammosa of authors | Pouteria sapota | Sapotaceae
|
| LUMU6 | Lucuma multiflora A. DC. | Pouteria multiflora | Sapotaceae
|
| LUNE4 | Lucuma nervosa A. DC. | Pouteria campechiana | Sapotaceae
|
| LUSA6 | Lucuma salicifolia Kunth | Pouteria campechiana | Sapotaceae
|
| LUTE2 | Lucya tetrandra (L.) K. Schum. | false bluet | Rubiaceae
|
| LUCYA | Lucya DC. | lucya | Rubiaceae
|