Amelanchier cusickii Fernald

Shrubs, 2–8 m. Stems 1–50, solitary or in colonies. Leaves fully unfolded; petiole (9–)12.8–19(–28) mm; blade elliptic to suborbiculate, (22–)33–46(–61) × (13–)25–32(–50) mm, base subcordate to truncate, each margin with (0 or)1–6(–11) teeth on proximal 1/2 and (2–)4 or 5(–7) teeth in distalmost cm, largest teeth 1 mm, apex usually truncate, sometimes mucronate to acute, abaxial surface glabrous or sparsely hairy by flowering, glabrous (or sparsely hairy) later, adaxial glabrous later. Inflorescences (4–)6–8(–10)-flowered, (17–)26–36(–47) mm. Pedicels: (0 or)1 or 2 subtended by a leaf, proximalmost (4–)9–14(–18) mm. Flowers: sepals erect to recurved after flowering, (2.6–)3.3–4.3(–5.3) mm; petals obovate to oblanceolate, (10.8–)13.3–20.1(–23.2) × (2.3–)3.3–6.3(–7.5) mm; stamens (14–)18–20(–21); styles (4 or)5, (1.7–)2.6–4(–4.8) mm; ovary apex glabrous or sparsely hairy (or with a ring of hairs at base of styles). Pomes bluish black, 10 mm diam. 2n = 4x.

Open woods, canyons and hillsides from near sea-level to the sub-alpine zone. Basaltic ledges, cliffs, and bluffs along streams, stony soil, streambeds, stream banks, copses, mountainsides, roadsides; at elevations from 600-2,300 metres.

The fruit is eaten raw or cooked. The leaves are a tea substitute.

It can be grown from seed, layering or suckers. Seed can take 18 months to germinate and layers can take 18 months to form roots.