Flora of the Southeastern United States

Toxicodendron radicans (Linnaeus) Kuntze var. negundo (Greene) Reveal. Common name: Midwestern Poison Ivy. Phenology: Late Apr-May; Aug-Oct. Habitat: In a wide range of habitats, including mesic forests, rock outcrops, open areas, and disturbed ground. Distribution: NY west to MI, MN, and NE, south to sw. VA, KY, AR, and TX, almost entirely in or west of the Appalachians.

Origin/Endemic status: Native

Synonymy ⓘ: = C, Il, Va; = n/a — RAB; = Rhus radicans L. var. vulgaris (Michx.) DC. — F, G; = Toxicodendron negundo Greene — Greene (1905); = Toxicodendron radicans (L.) Kuntze ssp. negundo (Greene) Gillis — GrPl, K4, Mo2, NcTx, NE, NS, NY, POWO, Gillis (1971); < Toxicodendron radicans (L.) Kuntze — Ar, Mi, Ok, Pa, S, Tn; < Toxicodendron radicans (L.) Kuntze var. radicans — FNA13, NeUS. Basionym: Toxicodendron negundo Greene 1905

Links to other floras: < Toxicodendron radicans var. radicans - FNA13

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Wetland Indicator Status:

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

Heliophily ⓘ: 5