Amelanchier alnifolia, Saskatoon serviceberry

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Intermountain Flora
Shrub, 1-4.5 m tall, the bark of the young stems smooth, reddish-brown, eventually becoming gray; herbage glabrous to sparsely puberulent when young, the pubescence sometimes persisting on the leaves through the season; leaves petiolate, the petiole 0.7-1.8 (2.8) cm long, the stipules filiform, caducous, the blade (ob)ovate to suborbicular, (2) 2.5-6 cm long, 1.5-4.5 cm wide, obtuse, rounded, truncate, or subcordate basally, obtuse, rounded or sometimes retuse apically, serrate or coarsely toothed, usually from or beyond the middle, the veins often prominent beneath, the surface often green above and glaucous beneath; racemes short, erect, 5-15-flowered, variously pubescent to completely glabrous; flowers fragrant; hypanthium brownish within; sepals becoming reflexed at anthesis, deltate-lanceolate to narrowly lanceolate, 1.8-4 (5.5) mm long, persistent; petalsoblanceolate, 7-18 mm long, 2.5-6.7 mm wide, the claw pilosulose at the base, white; stamens 20, the filaments white, the anthers 0.5-0.8 mm long, brownish; styles (4) 5, united into a column below; pome globose, 7-10 mm thick, densely tomentose at the apex or sometimes completely glabrous, becoming fleshy and purplish at maturity, usually 10-seeded, edible; seeds 3.5-5 mm long, dark brown; 2n = 68.

Cronquist, A., Holmgren, N.H., and Holmgren, P.K. (1997) "Intermountain Flora" pg. 152-153, vol. 3 part A, The New York Botanical Garden New York.