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Tree to 10 m. Branchlets smooth, glabrous, with a few lenticels. Buds hairy, 0.7–0.75 cm long. Leaves 7.5–10 × 6.5–7.5 cm, ovate to rounded, upper surface glabrous, lower surface white-tomentose, eight to nine secondary veins on each side of midrib, craspedodromous, margins double-serrate to shallowly lobed, apex acute; petiole 1.3–2 cm long, pubescent. Inflorescence corymbose, pubescent. Flowers white, hermaphrodite; hypanthium turbinate, sepals deciduous, petals glabrous, 0.5 cm long. Fruit orange, 0.9–1.1 × 0.7–0.9 cm, covered with lenticels. Flowering May to June, fruiting July to September (Caucasus). Aldasoro et al. 2004. Distribution ARMENIA; AZERBAIJAN; GEORGIA. Habitat Mountain slopes, forest margins, between 1700 and 2300 m asl. USDA Hardiness Zone 5–6. Conservation status Not evaluated. Illustration More & White 2003; NT814, NT816, NT820. Taxonomic note A tetraploid apomictic microspecies, or more likely an aggregate of similar microspecies, very like S. graeca and behaving similarly in cultivation (H. McAllister, pers. comm. 2007).
One of the species named and introduced by the famous Armenian botanist Nora Gabrieljan (as noted above), Sorbus hajastana is grown in a number of British collections. It is an unremarkable small whitebeam, forming a rounded, bushy small tree.