Common Name:
POISON-IVY
Synonym:
Toxicodendron radicans
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Coefficient of Conservatism:
3
Coefficient of Wetness:
0
Wetness Index:
FAC
Physiognomy:
Nt Shrub
A. A. Reznicek
Included in T. radicans in Michigan Flora.
Shores, dunes, and sunny slopes; in clearings and at forest borders; roadsides and railroads; usually in sandy, gravelly, or rocky soil. Occurring in southern Michigan only on sand near the shores of Lakes Michigan and Huron. The Kalamazoo Co. record is along a railway and may be an introduction.
This plant produces no aerial roots, so never climbs, and the leaflets are typically somewhat folded (often so when pressed); the petioles are glabrous or nearly so. Suspected hybrids between this and T. radicans have been identified from Gladwin, losco, Lapeer, Oceana, Oscoda, and St. Clair Cos., and likely occur elsewhere.