Sorbus subg. Sorbus
Shrubs or trees, to 150 dm. Winter buds glutinous or not. Leaves pinnately compound at least proximally; petiole nodes 5-lacunate; leaflet margins usually serrate, rarely almost entire. Flowers: styles distinct. Pomes: epidermis single-layered; flesh without tanniferous cells; core absent.
North America, Eurasia, n Africa, Atlantic Islands, in Pacific Islands (New Zealand)
Species 72 (8 in the flora).
Four of the 11 recognized sections of subg. Sorbus occur in the flora area.
|1||Leaflets minutely, densely papillose abaxially (at 70× ); carpels in fruit distinct in distal 1/2, apices convex; winter buds densely hairy, hairs usually whitish, rarely rufous, not glutinous.||53c.Sorbus sect. Sorbus|
|1||Leaflets not papillose abaxially; carpels in fruit connate or distinct, apices flat or convex; winter buds glabrous, glutinous, or hairy, hairs usually rufous, sometimes whitish||> 2|
|2||Winter buds mostly glutinous; carpel apices flat or convex.||53c.Sorbus sect. Commixtae|
|2||Winter buds never strongly glutinous; carpel apices convex||> 3|
|3||Leaflets not glaucous adaxially; flowers: perianth and androecium epigynous; carpels connate entire lengths; pomes red, not glaucous.||53c.Sorbus sect. Sambucifoliae|
|3||Leaflets somewhat glaucous adaxially; flowers: perianth and androecium semiepigynous; carpels distinct most of lengths; pomes pinkish red, glaucous.||53c.Sorbus sect. Tianshanicae|