Many-flowered shadbush

Amelanchier ovalis Medikus var. semiintegrifolia Hooker, Fl. Bor.-Amer. 1: 202. 1832; A. florida Lindley var. humptulipensis G. N. Jones

Shrubs or trees, 1–12 m. Stems 1–20, solitary or in colonies. Leaves: petiole (3–)6.8–12.6(–20) mm; blade elliptic to oval to orbiculate, (16–)24–34(–49) × (7–)17–26(–37) mm, base rounded or subcordate, apex subtruncate to rounded or acute, abaxial surface sparsely to moderately hairy, adaxial glabrous or sparsely (moderately) hairy. Inflorescences (4–)6–9(–12)-flowered, (8–)14–26(–35) mm. Pedicels: proximalmost (2–)3–8(–13) mm. Flowers: sepals (1.4–)2.2–3.2(–4) mm; petals oblanceolate to oval, (7.6–)9.9–13.9(–18.2) × (2.6–)3.3–4.7(–6.6) mm; ovary apex moderately to densely hairy (or glabrous). Pomes 10–13 mm diam. 2n = 4x.

Flowering Mar–Jun; fruiting Jun–Aug. Woods, hillsides, roadsides, mountainsides; 0–2100 m; B.C.; Alaska, Calif., Oreg., Wash.

Variety semiintegrifolia is most similar to and intergrades with var. alnifolia; inflorescences and lowest pedicel lengths distinguish the two.