| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|
| Fabaceae | Lathyrus aphaca | Yellow Vetchling | Disturbed areas. | Native of Eurasia. Scattered in occurrence in the Southeast, including AL, TN, and KY (Kartesz 1999). | 
|
| Fabaceae | Lathyrus decaphyllus var. incanus | Hoary Vetchling | Prairies. | NE south to sc. OK and CO. | |
| Fabaceae | Lathyrus hirsutus | Caley Pea, Singletary Pea, Rough Pea | Roadsides, fields, disturbed areas. | Native of Europe. Reported for s. IN by Bill Thomas (pers.comm., 2022). | 
|
| Fabaceae | Lathyrus japonicus var. maritimus | Atlantic Beach Pea | Beaches. | The species is circumboreal, south in eastern North America to NJ (or NC?) and the shores of the Great Lakes. | 
|
| Fabaceae | Lathyrus latifolius | Everlasting Pea, Perennial Sweet Pea | Roadsides, fencerows, disturbed areas. | Native of Europe. | 
|
| Fabaceae | Lathyrus ochroleucus | Cream Vetchling, Pale Vetchling | Dry forests and thickets. | QC to AK, south to n. NJ, PA, w. KY, s. IL, IA, NE, ID, and WA. | 
|
| Fabaceae | Lathyrus odoratus | Sweet Pea | Cultivated, and occasionally persisting. | Native of s. Europe. | 
|
| Fabaceae | Lathyrus palustris | Marsh Pea, Marsh Vetchling | Tidal freshwater marshes, calcareous fens, bottomland forests, other marshes, streambanks. | Circumboreal, ranging in North America south to DE, VA, ne. NC, ec. GA, OH, IN, MO, CO, and CA. | |
| Fabaceae | Lathyrus pratensis | Meadow Pea, Yellow Vetchling | Disturbed areas. | Native of Eurasia. | 
|
| Fabaceae | Lathyrus pusillus | Tiny Pea | Open areas in bottomlands, disturbed areas. | E. VA, MO and KS, south to FL Panhandle and TX; disjunct in s. South America. The more eastern populations are scattered and curious. | 
|
| Fabaceae | Lathyrus sylvestris | Perennial Pea | Cultivated, and occasionally persisting, and more rarely naturalizing. | Native of Europe. Reported as naturalizing in se. TN along a roadcut (Hart, Shaw, & Estes 2012). | 
|
| Fabaceae | Lathyrus tuberosus | Tuberous Vetchling | Disturbed areas. | Native of Europe. Introduced in e. TN (Chester, Wofford, & Kral 1997), WV (Strausbaugh & Core 1978), and KY. | 
|
| Fabaceae | Lathyrus venosus | Forest Pea, Bush Vetch, Veiny Pea | Dry to mesic slope and bottomlands forests and woodlands, rocky bars and outcrops along rivers, somewhat (but not at all strictly) associated with base-rich soils. | S. ON west to MN and SK, south to c. NC, wc. GA, LA, and TX. | |