Amelanchier sanguinea (Pursh) DC.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Erect or straggling shrub or small tree to 3(–6) m, usually with several clumped stems; lvs at anthesis half-grown and tomentose beneath, eventually glabrous, oblong to subrotund or quadrate, to 7 cm, mostly 1–1.5 times as long as wide, rather coarsely toothed (often only above the middle), with mostly 3–5 teeth per cm of margin, seldom more than 20 per side; lateral veins more than half as many as the teeth, parallel, straight or slightly curved, simple or once (rarely twice) forked, each vein or fork running to a tooth; racemes loose and open, the lower pedicels mostly (1–)1.5–3(–4) cm; sep recurved from near the middle after anthesis; ovary tomentose at the summit; mostly polyploid. Mostly in open woods; Me. and s. Que. to Minn., s. to N.Y., n. N.J., Mich., and Io., and irregularly in the mts. to N.C. and Tenn. May, June. Var. sanguinea, with the range of the species, has pedicels to 3 cm, the pedicels and sep usually retaining their tomentum until after anthesis; the hypanthium is cupulate, 4–7 mm wide, and the pet are mostly 10–18 mm. (A. humilis; A. huronensis) Var. grandiflora (Wiegand) Rehder, restricted to c. N.Y., has the pedicels and hypanthium soon glabrescent, the hypanthium saucer-shaped and 7–9 mm wide, the pedicels 2.5–4 cm, and the pet 15–22 mm. (A. amabilis)
New England serviceberry