Flora of the Southeastern United States
2022 Edition

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ANACARDIACEAE

Toxicodendron radicans (Linnaeus) Kuntze var. radicans . Eastern Poison Ivy. Phen: Late Apr-May; Aug-Oct. Hab: In a wide range of habitats, including mesic forests, rock outcrops, swamp forests, brackish marshes, open areas, disturbed ground, usually in more mesic to hydric sites than T. pubescens, and particularly common in areas with fertile soils, such as bottomlands or over calcareous rocks or calcareous sands (as in maritime forests). Dist: NS south to s. FL (and the Bahamas), west to e. TX, inland to VT, c. PA, WV, KY, and AR.

Origin/Endemic status: Native

Syn: = C, Va; = Toxicodendron radicans ssp. radicans – K1, K3, K4, Mo2, NE, NY; < Rhus radicans – Bah, RAB; > Rhus radicans var. radicans – F, G, WV; < Rhus radicans var. vulgaris – Tx; > Rhus radicans var. vulgaris – WV; > Rhus radicans var. vulgaris forma vulgaris – F, G; < Toxicodendron radicans – Ar, Fl4, GW2, Mi, Pa, S, Tn, W, WH3; < Toxicodendron radicans var. radicans – Il

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image of plant© J.W. Hardin
image of plant© Alan M. Cressler
image of plant© J.W. Hardin
image of plant© Alan M. Cressler