Article from New Trees by John Grimshaw & Ross Bayton
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'Sorbus tamamschjanae' from the website Trees and Shrubs Online (treesandshrubsonline.
Shrub or tree to 8 m. Buds ovate, 0.4–0.6 cm long. Leaves 2.5–9 cm long, ovate, upper surface dark green, lower surface greyish white-pubescent, margins deeply lobed to almost pinnate at the leaf base and on immature shoots, apex subobtuse. Inflorescence 4–11 cm diameter, with 25–60(–90) flowers. Flowers 1.5–1.8 cm diameter. Fruit orange, 1.2 cm diameter, no lenticels. Gabrieljan 1972. Distribution ARMENIA; TURKEY: eastern Anatolia. Habitat Open mixed forest or scrub, between 1500 and 2600 m asl. USDA Hardiness Zone 5–6. Conservation status Not evaluated. Illustration More & White 2003; NT814, NT818, NT825. Taxonomic note This species is almost certainly the Armenian equivalent of S. arranensis, probably the result of hybridisation between one of the local tetraploids of the Aria aggregate (S. hajastana, S. takhtajanii, or perhaps even S. subfusca) and Armenian S. aucuparia (H. McAllister, pers. comm. 2007).
The deeply lobed leaves of Sorbus tamamschjanae make it recognisable among the Armenian species (see p. 817), but it cannot be said to be particularly exciting.