in C. S. Sargent, Pl. Wilson. 1: 456. 1913.
Branchlets red-brown, turning brown in following year. Leaves: petiole 4–7 mm; blade apex rounded to obtuse, usually minutely apiculate. Bracteoles 2, deciduous, linear to oblong, small, petaloid. Pedicels 3–11 mm, proximal bract leaflike, other reduced. Flowers: sepals 2.1–3 mm; petals 12–20 mm; anthers 0.8–1.4 mm.
Phenology: Flowering spring.
Habitat: Forest borders, exotic-dominated woods, disturbed sites, areas of cultivation
Elevation: 10–200 m
Introduced; Ark., Conn., Del., Ga., La., Mass., Minn., Miss., Mo., N.Y., N.C., Ohio, Pa., S.C., Tenn., Va., e Asia, introduced also in Europe, Australia.