Sorbus sitchensis var. sitchensis
Leaflets: l/w ratio 2.2–3.1, margins toothed apically, serrate for more than 1/2 their length, serrations fine to coarse, sometimes doubly serrate. Flowers: petals white, pink or white in bud, claw glabrous or villous; styles 1.5–2.2 (–3) mm. 2n = 68.
Phenology: Flowering spring; fruiting fall.
Habitat: Open conifer woods, forest edges, mountain slopes, meadows, shores of lakes and streams
Elevation: 0–2400 m
Alta., B.C., Yukon, Alaska, Calif., Idaho, Mont., Oreg., Wash.