Urtica dioica subsp. dioica
Stems hispid, with stinging hairs. Leaf blades abaxially hispid, both surfaces with stinging hairs. Flowers unisexual, staminate and pistillate on different plants. 2n = 52.
Phenology: Flowering late spring–early fall.
Habitat: Alluvial woods, margins of deciduous woodlands, fencerows, waste places
Elevation: 0-500 m
Introduced; Greenland, St. Pierre and Miquelon, B.C., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Ala., Alaska, Calif., Conn., Del., D.C., Fla., Ga., Maine, Md., Mass., Mich., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Oreg., Pa., Tenn., Va., Wash., W.Va., native to Eurasia.
No documented specimens of Urtica diocia var. dioica are known from Vermont; it could occur there in similar habitats.