Lathyrus venosus Muhlenberg ex Willdenow var. intonsus Butters & H. St. John. Hairy Forest Pea. Phen: May-Jul. 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: W. NY, s. ON, and MN south to IN and ec. MO.

Origin/Endemic status: Native

Synonymy: = C, FNA11.2, G, GrPl, Il; < Lathyrus venosus Muhl. ex Willd. – K1, K3, K4, Mi, NY, S13, Isely (1998); > Lathyrus venosus Muhl. ex Willd. var. intonsus Butters & H.St.John – F; > Lathyrus venosus Muhl. ex Willd. var. meridionalis Butters & H.St.John – F

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Wetland Indicator Status:

• 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)