| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| LEDEP | Lepidium densiflorum Schrad. var. pubecarpum (A. Nels.) Thellung | babyseed pepperweed | Brassicaceae
|
| LEDER | Lepidium densiflorum Schrad. var. ramosum (A. Nels.) Thellung | miner's pepperweed | Brassicaceae
|
| LEDET | Lepidium densiflorum Schrad. var. typicum Thellung | Lepidium densiflorum var. densiflorum | Brassicaceae
|
| LEDE | Lepidium densiflorum Schrad. | common pepperweed | Brassicaceae
|
| LEDIA | Lepidium dictyotum Gray var. acutidens Gray | alkali pepperwort | Brassicaceae
|
| LEDID | Lepidium dictyotum Gray var. dictyotum | alkali pepperweed | Brassicaceae
|
| LEDI2 | Lepidium dictyotum Gray | alkali pepperweed | Brassicaceae
|
| LEDI4 | Lepidium didymum L. | Coronopus didymus | Brassicaceae
|
| LEDI5 | Lepidium divergens Osterhout | Lepidium ramosissimum var. divergens | Brassicaceae
|
| LEDR | Lepidium draba L. | Cardaria draba | Brassicaceae
|
| LEEL4 | Lepidium elongatum Rydb. | Lepidium densiflorum var. elongatum | Brassicaceae
|
| LEFLF | Lepidium flavum Torr. var. felipense C.L. Hitchc. | yellow pepperweed | Brassicaceae
|
| LEFLF2 | Lepidium flavum Torr. var. flavum | yellow pepperweed | Brassicaceae
|
| LEFL2 | Lepidium flavum Torr. | yellow pepperweed | Brassicaceae
|
| LEFRF | Lepidium fremontii S. Wats. var. fremontii | desert pepperweed | Brassicaceae
|
| LEFRS | Lepidium fremontii S. Wats. var. stipitatum Rollins | desert pepperweed | Brassicaceae
|
| LEFR2 | Lepidium fremontii S. Wats. | desert pepperweed | Brassicaceae
|
| LEGR5 | Lepidium graminifolium L. | grassleaf pepperweed | Brassicaceae
|
| LEHE2 | Lepidium heterophyllum Benth. | purpleanther field pepperweed | Brassicaceae
|
| LEHI5 | Lepidium ?hirtum (L.) Sm. | Mediterranean pepperweed | Brassicaceae
|
| LEHU8 | Lepidium huberi Welsh & Goodrich | Huber's pepperweed | Brassicaceae
|
| LEHY2 | Lepidium hyssopifolium Desv. | hyssopleaf pepperweed | Brassicaceae
|
| LEID | Lepidium idahoense Heller | Lepidium virginicum var. medium | Brassicaceae
|
| LEINH | Lepidium integrifolium Nutt. var. heterophyllum S. Wats. | thickleaf pepperweed | Brassicaceae
|
| LEINI | Lepidium integrifolium Nutt. var. integrifolium | thickleaf pepperweed | Brassicaceae
|
| LEIN5 | Lepidium integrifolium Nutt. | thickleaf pepperweed | Brassicaceae
|
| LEJAA | Lepidium jaredii Brandeg. ssp. album Hoover | Panoche pepperweed | Brassicaceae
|
| LEJAJ2 | Lepidium jaredii Brandeg. ssp. jaredii | Jared's pepperweed | Brassicaceae
|
| LEJA | Lepidium jaredii Brandeg. | Jared's pepperweed | Brassicaceae
|
| LEJO | Lepidium jonesii Rydb. | Lepidium montanum var. jonesii | Brassicaceae
|
| LELAG | Lepidium lasiocarpum Nutt. var. georginum (Rydb.) C.L. Hitchc. | Lepidium lasiocarpum var. lasiocarpum | Brassicaceae
|
| LELAL | Lepidium lasiocarpum Nutt. var. lasiocarpum | shaggyfruit pepperweed | Brassicaceae
|
| LELAO | Lepidium lasiocarpum Nutt. var. orbiculare (Thellung) C.L. Hitchc. | Lepidium austrinum | Brassicaceae
|
| LELAR | Lepidium lasiocarpum Nutt. var. rotundum C.L. Hitchc. | Lepidium lasiocarpum var. lasiocarpum | Brassicaceae
|
| LELAT | Lepidium lasiocarpum Nutt. var. typicum C.L. Hitchc. | Lepidium lasiocarpum var. lasiocarpum | Brassicaceae
|
| LELAW | Lepidium lasiocarpum Nutt. var. wrightii (Gray) C.L. Hitchc. | Wright's pepperweed | Brassicaceae
|
| LELA | Lepidium lasiocarpum Nutt. | shaggyfruit pepperweed | Brassicaceae
|
| LELA2 | Lepidium latifolium L. | broadleaved pepperweed | Brassicaceae
|
| LELAH2 | Lepidium latipes Hook. var. heckardii Rollins | Heckard's pepperweed | Brassicaceae
|
| LELAL3 | Lepidium latipes Hook. var. latipes | San Diego pepperweed | Brassicaceae
|
| LELA3 | Lepidium latipes Hook. | San Diego pepperweed | Brassicaceae
|
| LEMEP | Lepidium medium Greene var. pubescens (Greene) B.L. Robins. | Lepidium virginicum var. pubescens | Brassicaceae
|
| LEME3 | Lepidium medium Greene | Lepidium virginicum var. medium | Brassicaceae
|
| LEME4 | Lepidium menziesii DC. | Lepidium virginicum var. menziesii | Brassicaceae
|
| LEME19 | Lepidium meyenii Walp. | maca | Brassicaceae
|
| LEMOA4 | Lepidium montanum Nutt. ssp. alyssoides (Gray) C.L. Hitchc. | Lepidium alyssoides var. alyssoides | Brassicaceae
|
| LEMOC3 | Lepidium montanum Nutt. ssp. canescens (Thellung) C.L. Hitchc. | Lepidium montanum var. canescens | Brassicaceae
|
| LEMOC2 | Lepidium montanum Nutt. ssp. cinereum (C.L. Hitchc.) C.L. Hitchc. | Lepidium montanum var. cinereum | Brassicaceae
|
| LEMOD2 | Lepidium montanum Nutt. ssp. davisii (Rollins) C.L. Hitchc. | Lepidium davisii | Brassicaceae
|
| LEMOD | Lepidium montanum Nutt. ssp. demissum C.L. Hitchc. | Lepidium barnebyanum | Brassicaceae
|
| LEMOA | Lepidium montanum Nutt. var. alpinum S. Wats. | alpine pepperweed | Brassicaceae
|
| LEMOA2 | Lepidium montanum Nutt. var. alyssoides (Gray) M.E. Jones | Lepidium alyssoides var. alyssoides | Brassicaceae
|
| LEMOA3 | Lepidium montanum Nutt. var. angustifolium C.L. Hitchc. | Lepidium alyssoides var. angustifolium | Brassicaceae
|
| LEMOC | Lepidium montanum Nutt. var. canescens (Thellung) C.L. Hitchc. | mountain pepperweed | Brassicaceae
|
| LEMOC4 | Lepidium montanum Nutt. var. cinereum (C.L. Hitchc.) Rollins | mountain pepperweed | Brassicaceae
|
| LEMOC5 | Lepidium montanum Nutt. var. claronense Welsh | mountain pepperweed | Brassicaceae
|
| LEMOC6 | Lepidium montanum Nutt. var. coloradense Rollins | mountain pepperweed | Brassicaceae
|
| LEMOE | Lepidium montanum Nutt. var. eastwoodiae (Woot.) C.L. Hitchc. | Lepidium alyssoides var. eastwoodiae | Brassicaceae
|
| LEMOG | Lepidium montanum Nutt. var. glabrum C.L. Hitchc. | mountain pepperweed | Brassicaceae
|
| LEMOH | Lepidium montanum Nutt. var. heterophyllum (S. Wats.) C.L. Hitchc. | Lepidium integrifolium var. heterophyllum | Brassicaceae
|
| LEMOI | Lepidium montanum Nutt. var. integrifolium (Nutt.) C.L. Hitchc. | Lepidium integrifolium var. integrifolium | Brassicaceae
|
| LEMOJ | Lepidium montanum Nutt. var. jonesii (Rydb.) C.L. Hitchc. | Jones' pepperweed | Brassicaceae
|
| LEMOM | Lepidium montanum Nutt. var. montanum | mountain pepperweed | Brassicaceae
|
| LEMON | Lepidium montanum Nutt. var. neeseae Welsh & Reveal | Elizabeth's pepperweed | Brassicaceae
|
| LEMON2 | Lepidium montanum Nutt. var. nevadense Rollins | mountain pepperweed | Brassicaceae
|
| LEMOP | Lepidium montanum Nutt. var. papilliferum (Henderson) C.L. Hitchc. | Lepidium papilliferum | Brassicaceae
|
| LEMOS | Lepidium montanum Nutt. var. spathulatum (B.L. Robins.) C.L. Hitchc. | Lepidium crenatum | Brassicaceae
|
| LEMOS2 | Lepidium montanum Nutt. var. stelliae Welsh & Reveal | Lepidium montanum var. cinereum | Brassicaceae
|
| LEMOT | Lepidium montanum Nutt. var. tenellum (L.O. Williams) C.L. Hitchc. | mountain pepperweed | Brassicaceae
|
| LEMOW | Lepidium montanum Nutt. var. wyomingense (C.L. Hitchc.) C.L. Hitchc. | mountain pepperweed | Brassicaceae
|
| LEMO2 | Lepidium montanum Nutt. | mountain pepperweed | Brassicaceae
|
| LENA2 | Lepidium nanum S. Wats. | dwarf pepperweed | Brassicaceae
|
| LENE7 | Lepidium neglectum Thellung | Lepidium densiflorum var. densiflorum | Brassicaceae
|
| LENIH | Lepidium nitidum Nutt. var. howellii C.L. Hitchc. | Howell's pepperweed | Brassicaceae
|
| LENII | Lepidium nitidum Nutt. var. insigne Greene | Lepidium nitidum var. nitidum | Brassicaceae
|
| LENIN | Lepidium nitidum Nutt. var. nitidum | shining pepperweed | Brassicaceae
|
| LENIO | Lepidium nitidum Nutt. var. oreganum (T.J. Howell ex Greene) C.L. Hitchc. | shining pepperweed | Brassicaceae
|
| LENI | Lepidium nitidum Nutt. | shining pepperweed | Brassicaceae
|
| LEOBI | Lepidium oblongum Small var. insulare C.L. Hitchc. | veiny pepperweed | Brassicaceae
|
| LEOBO | Lepidium oblongum Small var. oblongum | veiny pepperweed | Brassicaceae
|
| LEOB | Lepidium oblongum Small | veiny pepperweed | Brassicaceae
|
| LEOR2 | Lepidium orbiculare St. John | Lepidium serra | Brassicaceae
|
| LEOS | Lepidium ostleri Welsh & Goodrich | Ostler's pepperweed | Brassicaceae
|
| LEOW | Lepidium owaihiense Cham. & Schlecht. | Lepidium bidentatum var. owaihiense | Brassicaceae
|
| LEOX | Lepidium oxycarpum Torr. & Gray | forked pepperweed | Brassicaceae
|
| LEPA17 | Lepidium papilliferum (Henderson) A. Nels. & J.F. Macbr. | Idaho pepperweed | Brassicaceae
|
| LEPA42 | Lepidium paysonii Rollins | Payson's pepperweed | Brassicaceae
|
| LEPE2 | Lepidium perfoliatum L. | clasping pepperweed | Brassicaceae
|
| LEPI | Lepidium pinnatifidum Ledeb. | featherleaf pepperweed | Brassicaceae
|
| LEPI2 | Lepidium pinnatisectum (O.E. Schulz) C.L. Hitchc. | tansy pepperweed | Brassicaceae
|
| LEPU6 | Lepidium pubecarpum A. Nels. | Lepidium densiflorum var. pubecarpum | Brassicaceae
|
| LEPU7 | Lepidium pubescens auct. non Desv. | Lepidium strictum | Brassicaceae
|
| LERAB2 | Lepidium ramosissimum A. Nels. var. bourgeauanum (Thellung) Rollins | Bourgeau's pepperweed | Brassicaceae
|
| LERAD2 | Lepidium ramosissimum A. Nels. var. divergens (Osterhout) Rollins | manybranched pepperweed | Brassicaceae
|
| LERAR3 | Lepidium ramosissimum A. Nels. var. ramosissimum | manybranched pepperweed | Brassicaceae
|
| LERA2 | Lepidium ramosissimum A. Nels. | manybranched pepperweed | Brassicaceae
|
| LERA6 | Lepidium ramosum A. Nels. | Lepidium densiflorum var. ramosum | Brassicaceae
|
| LERE10 | Lepidium remyi Drake | Lepidium bidentatum var. remyi | Brassicaceae
|
| LERE8 | Lepidium repens (Schrenk) Boiss. | Cardaria chalapensis | Brassicaceae
|
| LERU | Lepidium ruderale L. | roadside pepperweed | Brassicaceae
|
| LESA2 | Lepidium sativum L. | gardencress pepperweed | Brassicaceae
|