Wisteria frutescens (Linnaeus) Poiret var. macrostachya Torrey & A. Gray. Mississippi Wisteria, American Wisteria, Swamp Wisteria. Phen: Apr-May; Jun-Sep. Hab: Swamp forests, wet thickets. Dist: S. IN and s. MO south to LA, eastwards to w. VA and w. NC.

Origin/Endemic status: Endemic

Taxonomy Comments: This taxon may well warrant recognition as separate from W. frutescens at specific rank.

Synonymy: = Bradleia macrostachys (Torr. & A.Gray) Small – S13; = Kraunhia macrostachya (Torr. & A.Gray) Small – S; = Wisteria macrostachya (Torr. & A.Gray) Nutt. ex B.L.Rob. & Fernald – C, F, G, Tx, Valder (1995); < Wisteria frutescens (L.) Poir. – Ar, FNA11.1, GW2, Il, K1, K3, Mi, NY, RAB, SE3, Tn, Va, W, Isely (1998)

Show in key(s)

Show parent genus

Wetland Indicator Status:

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

Heliophily: 6