Shrub to 2 m, often in clumps; lvs imbricate in bud, short-petiolate, oblong-elliptic or somewhat obovate, often mucronate, tapering to the base, sharply serrate, glabrous, ±coppery when young but less so than in no. 9 [Amelanchier laevis Wiegand]; petiole 3-10(-15) mm; fls solitary or more often 2-4(5) together on glabrous pedicels 1-3 cm, 1 terminal, the others from adjacent lf-axils; sep triangular-acuminate, ascending or spreading, persistently tomentose on the upper side; pet elliptic, 6-10 mm, often more than half as wide; ovary densely tomentose at the summit, tapering into the styles; fr dark purple, 1 cm, longer than thick, often some of the seeds abortive; sexual. Moist woods, swamps, and streambanks; Lab. to James Bay and Man., s. to N. Engl., n. Mich., and n. Minn., and at higher altitudes in the mts. to Pa. and W.Va. May-Aug.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.