| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| LACO3 | Lapsana communis L. | common nipplewort | Asteraceae
|
| LAPSA | Lapsana L. | nipplewort | Asteraceae
|
| LAAP3 | Lapsanastrum apogonoides (Maxim.) J.H. Pak & K. Bremer | Japanese nipplewort | Asteraceae
|
| LAPSA2 | Lapsanastrum J.H. Pak & K. Bremer | nipplewort | Asteraceae
|
| LAAL6 | Larix alaskensis W. Wight | Larix laricina | Pinaceae
|
| LADE2 | Larix decidua P. Mill. | European larch | Pinaceae
|
| LAKA2 | Larix kaempferi (Lam.) Carr. | Japanese larch | Pinaceae
|
| LALAA5 | Larix laricina (Du Roi) K. Koch var. alaskensis (W. Wight) Raup | Larix laricina | Pinaceae
|
| LALA | Larix laricina (Du Roi) K. Koch | tamarack | Pinaceae
|
| LALY | Larix lyallii Parl. | subalpine larch | Pinaceae
|
| LAOC | Larix occidentalis Nutt. | western larch | Pinaceae
|
| LASI3 | Larix sibirica Ledeb. | Siberian larch | Pinaceae
|
| LARIX | Larix P. Mill. | larch | Pinaceae
|
| LADI2 | Larrea divaricata auct. non Cav. | Larrea tridentata var. tridentata | Zygophyllaceae
|
| LAGL11 | Larrea glutinosa Engelm. | Larrea tridentata var. tridentata | Zygophyllaceae
|
| LAME6 | Larrea mexicana Moric. | Larrea tridentata | Zygophyllaceae
|
| LATRA | Larrea tridentata (Sess� & Moc. ex DC.) Coville var. arenaria L. Benson | creosote bush | Zygophyllaceae
|
| LATRT | Larrea tridentata (Sess� & Moc. ex DC.) Coville var. tridentata | creosote bush | Zygophyllaceae
|
| LATR2 | Larrea tridentata (Sess� & Moc. ex DC.) Coville | creosote bush | Zygophyllaceae
|
| LARRE | Larrea Cav. | creosote bush | Zygophyllaceae
|
| LAAD | Lasallea adnata (Nutt.) Semple & L. Brouillet | Symphyotrichum adnatum | Asteraceae
|
| LAAM3 | Lasallea �amethystina (Nutt.) Semple & L. Brouillet | Symphyotrichum amethystinum | Asteraceae
|
| LACA11 | Lasallea caroliniana (Walt.) Semple & L. Brouillet | Ampelaster carolinianus | Asteraceae
|
| LACO9 | Lasallea concolor (L.) Semple & L. Brouillet | Symphyotrichum concolor | Asteraceae
|
| LAER3 | Lasallea ericoides (L.) Semple & L. Brouillet | Symphyotrichum ericoides var. ericoides | Asteraceae
|
| LAFA4 | Lasallea falcata (Lindl.) Semple & L. Brouillet | Symphyotrichum falcatum var. falcatum | Asteraceae
|
| LAGR5 | Lasallea grandiflora (L.) Semple & L. Brouillet | Symphyotrichum grandiflorum | Asteraceae
|
| LANO | Lasallea novae-angliae (L.) Semple & L. Brouillet | Symphyotrichum novae-angliae | Asteraceae
|
| LAOB | Lasallea oblongifolia (Nutt.) Semple & L. Brouillet | Symphyotrichum oblongifolium | Asteraceae
|
| LAPA8 | Lasallea patens (Ait.) Semple & L. Brouillet | Symphyotrichum patens var. patens | Asteraceae
|
| LASEP2 | Lasallea sericea (Vent.) Greene ssp. pratensis (Raf.) Semple & L. Brouillet | Symphyotrichum pratense | Asteraceae
|
| LASE5 | Lasallea sericea (Vent.) Greene | Symphyotrichum sericeum | Asteraceae
|
| LAWA4 | Lasallea walteri (Alexander) Semple & L. Brouillet | Symphyotrichum walteri | Asteraceae
|
| LAPA13 | Lasallia papulosa (Ach.) Llano | blistered naval lichen | Umbilicariaceae
|
| LAPE60 | Lasallia pensylvanica (Hoffm.) Llano | Pensylvania blistered naval lichen | Umbilicariaceae
|
| LAPUP2 | Lasallia pustulata (L.) Merat ssp. papulosa (Ach.) W. A. Weber | Lasallia papulosa | Umbilicariaceae
|
| LAPU9 | Lasallia pustulata (L.) Merat | blistered navel lichen | Umbilicariaceae
|
| LASAL2 | Lasallia Merat | blistered navel lichen | Umbilicariaceae
|
| LADI3 | Lasiacis divaricata (L.) A.S. Hitchc. | smallcane | Poaceae
|
| LAGR4 | Lasiacis grisebachii (Nash) A.S. Hitchc. | Grisebach's tribisee | Poaceae
|
| LAHA | Lasiacis harrisii Nash | Harris' tribisee | Poaceae
|
| LALI | Lasiacis ligulata A.S. Hitchc. & Chase | thicket tribisee | Poaceae
|
| LAMA10 | Lasiacis maculata (Aubl.) Urban | Lasiacis sorghoidea var. sorghoidea | Poaceae
|
| LAPA11 | Lasiacis patentiflora A.S. Hitchc. & Chase | Lasiacis sorghoidea var. patentiflora | Poaceae
|
| LARU | Lasiacis ruscifolia (Kunth) A.S. Hitchc. & Chase | climbing tribisee | Poaceae
|
| LASL | Lasiacis sloanei (Griseb.) A.S. Hitchc. | Sloane's tribisee | Poaceae
|
| LASOP | Lasiacis sorghoidea (Desv. ex Hamilton) A.S. Hitchc. & Chase var. patentiflora (A.S. Hitchc. & Chase) Davidse | woodland tribisee | Poaceae
|
| LASOS | Lasiacis sorghoidea (Desv. ex Hamilton) A.S. Hitchc. & Chase var. sorghoidea | woodland tribisee | Poaceae
|
| LASO | Lasiacis sorghoidea (Desv. ex Hamilton) A.S. Hitchc. & Chase | woodland tribisee | Poaceae
|
| LASIA | Lasiacis (Griseb.) A.S. Hitchc. | smallcane | Poaceae
|
| LAPO4 | Lasianthaea podocephala (Gray) K. Becker | San Pedro daisy | Asteraceae
|
| LASIA3 | Lasianthaea DC. | lasianthaea | Asteraceae
|
| LALA5 | Lasianthus lanceolatus (Griseb.) G. Maza | mata de peo | Rubiaceae
|
| LAMO8 | Lasianthus moralesii (Griseb.) C. Wright | Lasianthus lanceolatus | Rubiaceae
|
| LASIA2 | Lasianthus Jack | lasianthus | Rubiaceae
|
| LADUB | Lasiococcus dumosus (Andr.) Small var. bigelovianus (Fern.) Fern. | Gaylussacia dumosa | Ericaceae
|
| LADU | Lasiococcus dumosus (Andr.) Small | Gaylussacia dumosa | Ericaceae
|
| LAMO7 | Lasiococcus mosieri (Small) Small | Gaylussacia mosieri | Ericaceae
|
| LAOR5 | Lasiococcus orocola (Small) Small | Gaylussacia dumosa | Ericaceae
|
| LABI5 | Lasiospermum bipinnatum (Thunb.) Druce | cocoonhead | Asteraceae
|
| LARA3 | Lasiospermum radiatum Trev. | Lasiospermum bipinnatum | Asteraceae
|
| LASIO | Lasiospermum M. Lagasca | cocoonhead | Asteraceae
|
| LACH6 | Lastarriaea chilensis auct. non Remy | Lastarriaea coriacea | Polygonaceae
|
| LACO4 | Lastarriaea coriacea (Goodman) Hoover | leather spineflower | Polygonaceae
|
| LASTA | Lastarriaea Remy | lastarriaea | Polygonaceae
|
| LABU | Lasthenia burkei (Greene) Greene | Burke's baeria | Asteraceae
|
| LACA7 | Lasthenia californica DC. ex Lindl. | California goldfields | Asteraceae
|
| LACH2 | Lasthenia chrysantha (Greene ex Gray) Greene | alkalisink goldfields | Asteraceae
|
| LACH3 | Lasthenia chrysostoma (Fisch. & C.A. Mey.) Greene | Lasthenia californica | Asteraceae
|
| LACO6 | Lasthenia conjugens Greene | Contra Costa goldfields | Asteraceae
|
| LACO7 | Lasthenia coronaria (Nutt.) Ornduff | royal goldfields | Asteraceae
|
| LADE8 | Lasthenia debilis (Greene ex Gray) Ornduff | Greene's goldfields | Asteraceae
|
| LAFE | Lasthenia ferrisiae Ornduff | Ferris' goldfields | Asteraceae
|
| LAFR4 | Lasthenia fremontii (Torr. ex Gray) Greene | Fremont's goldfields | Asteraceae
|
| LAGL3 | Lasthenia glaberrima DC. | smooth goldfields | Asteraceae
|
| LAGLC | Lasthenia glabrata Lindl. ssp. coulteri (Gray) Ornduff | Coulter's goldfields | Asteraceae
|
| LAGLG2 | Lasthenia glabrata Lindl. ssp. glabrata | yellowray goldfields | Asteraceae
|
| LAGLC2 | Lasthenia glabrata Lindl. var. coulteri Gray | Lasthenia glabrata ssp. coulteri | Asteraceae
|
| LAGL4 | Lasthenia glabrata Lindl. | yellowray goldfields | Asteraceae
|
| LALE4 | Lasthenia leptalea (Gray) Ornduff | Salinas Valley goldfields | Asteraceae
|
| LAMAB | Lasthenia macrantha (Gray) Greene ssp. bakeri (J.T. Howell) Ornduff | Baker's goldfields | Asteraceae
|
| LAMAM | Lasthenia macrantha (Gray) Greene ssp. macrantha | perennial goldfields | Asteraceae
|
| LAMAP4 | Lasthenia macrantha (Gray) Greene ssp. prisca Ornduff | perennial goldfields | Asteraceae
|
| LAMA6 | Lasthenia macrantha (Gray) Greene | perennial goldfields | Asteraceae
|
| LAMA8 | Lasthenia maritima (Gray) Ornduff | seaside goldfields | Asteraceae
|
| LAMI4 | Lasthenia microglossa (DC.) Greene | smallray goldfields | Asteraceae
|
| LAMIM | Lasthenia minor (DC.) Ornduff ssp. maritima (Gray) Ornduff | Lasthenia maritima | Asteraceae
|
| LAMIM2 | Lasthenia minor (DC.) Ornduff var. maritima (Gray) Cronq. | Lasthenia maritima | Asteraceae
|
| LAMI5 | Lasthenia minor (DC.) Ornduff | coastal goldfields | Asteraceae
|
| LAPL2 | Lasthenia platycarpha (Gray) Greene | alkali goldfields | Asteraceae
|
| LASTH | Lasthenia Cass. | goldfields | Asteraceae
|
| LAAU2 | Lastrea augescens (Link) J. Sm. | Thelypteris augescens | Thelypteridaceae
|
| LAGL9 | Lastrea globulifera Brack. | Thelypteris globulifera | Thelypteridaceae
|
| LALI7 | Lastrea limbosperma (All.) Heywood | Thelypteris quelpaertensis | Thelypteridaceae
|
| LAOR4 | Lastrea oregana (C. Christens.) Copeland | Thelypteris nevadensis | Thelypteridaceae
|
| LAPH | Lastrea phegopteris (L.) Bory | Phegopteris connectilis | Thelypteridaceae
|
| LAEF | Lastreopsis effusa (Sw.) Tindale | false shieldfern | Dryopteridaceae
|
| LASTR | Lastreopsis Ching | shieldfern | Dryopteridaceae
|
| LAAL4 | Lathyrus alefeldii White | Lathyrus vestitus ssp. alefeldii | Fabaceae
|
| LAAM2 | Lathyrus americanus Houst. ex P. Mill. | Rhynchosia americana | Fabaceae
|
| LAAN3 | Lathyrus angulatus L. | angled pea | Fabaceae
|