Lathyrus venosus Muhlenberg ex Willdenow var. arkansanus Fassett. Arkansas Forest Pea, Bush Vetch. Phen: May-Sep. Hab: 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. Dist: MO and OK south to w. LA and e. TX.

Origin/Endemic status: Endemic

Synonymy: = FNA11.2; < Lathyrus venosus Muhl. ex Willd. – Ar, K1, K3, K4, NcTx, S13, SE3

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FAC (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
• Great Plains: FAC (taxonomic split from wetland indicator species)
• Midwest: FAC (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FAC (taxonomic split from wetland indicator species)