The bright red fruits of all our species are attractive and persist on the trees until birds get to them, which is usually not long. Sorbus is a large genus in Eurasia, and other species are cultivated and may escape locally. 

1. Sepals, ovary, and winter-buds ± densely white-pubescent; leaflets ± soft-pubescent beneath; occasional escape from cultivation.

S. aucuparia

1. Sepals, ovary, and winter buds (outer scales) glabrous or sparsely pubescent; leaflets glabrous or glabrate over much or all of the surface beneath; native species.

2. Lateral leaflets (3.2-) 3.4-4.5 (-6.4) times as long as broad, ± tapered or acuminate to the sharp apex, usually completely glabrous at maturity; petals (2-) 2.4-3 mm long; pedicels and branches of inflorescence glabrous or nearly so; mature fruit ca. 5-6.5 mm in diameter, not glaucous even when dried.

S. americana

2. Lateral leaflets 2.4-3 (-3.2) times as long as broad, ± abruptly acute to obtuse at the apex, often retaining some pubescence at least along midrib beneath at maturity; petals (2.7-) 3-4.5 mm long; pedicels and branches of inflorescence ± hairy; mature fruit ca. (6-) 8-10 mm in diameter, often becoming glaucous especially in drying.

S. decora