Morton Arboretum acc. 28-94-3
Sorbus commixta (Japanese Rowan; Japanese: ナナカマド or ナナカマド（七竈）) is a species of flowering plant in the family Rosaceae, native to to Japan, the far east of Russia on Sakhalin, and in Korea on the island of Ulleungdo.
It is a small to medium-sized deciduous tree growing to 7–10 m (23–33 ft) tall, rarely 18 m (59 ft), with a rounded crown and brownish to silvery-grey bark. The leaves are 20–30 cm (8–12 in) long, and pinnate. The leaves consisit of 11-17 leaflets, each 4–7 cm (2–3 in) long and 1–2.5 cm broad, with an acuminate apex and serrated margins; they change to a deep purple or red in autumn. The flowers are 6–10 mm in diameter, with five white petals and 20 yellowish-white stamens; they are produced in corymbs 9–15 cm (4–6 in) in diameter in late spring to early summer. The fruit is a bright orange to red pome 7–8 mm in diameter, maturing in autumn.
Cultivation and uses
Outside its native range, it is grown as an ornamental tree, hardy in zones 5-9. It grows best in moist, well-drained soil, in full sun. A number of cultivars have been selected, the most popular being 'Embley' (with fastigiate branching) and 'Serotina' (flowering later in early summer). 'Embley' has gained the Royal Horticultural Society's Award of Garden Merit.
- McAllister, H.A. 2005. The genus Sorbus: Mountain Ash and other Rowans . Kew Publishing.
- Germplasm Resources Information Network: Sorbus commixta.
- Okayama University of Science: Sorbus commixta (in Japanese; google translation)
- Rushforth, K. (1999). Trees of Britain and Europe. Collins ISBN 0-00-220013-9.
- Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
- Kanagawa Plants: Sorbus commixta (in Japanese; google translation)
- "RHS Plant Selector - Sorbus commixta 'Embley'". Retrieved 04 June 2013.