Sorbus yunan (no English common name)
Native to (or naturalized in) Oregon:
- Broadleaf deciduous small to medium-sized tree, to about 50 ft (~15 m) tall. Branchlets reddish brown when young, purplish or grayish black when old. Leaves alternate, simple, elliptic to obovate- elliptic, 7-15 long and 4-10 cm wide, lateral veins 11-13 pairs, nearly parallel and terminating in marginal teeth, base wedge-shaped (cuneate) or rounded to subcordate, margin deeply regularly doubly serrate, apex acute to shortly acuminate, upper surface dark green, lower surface pale green with grayish-white tomentose; leaves turn golden yellow in fall. Flowers white, many per terminal clusters on long shoots. Fruit cherry-red, oblong or obovoid-oblong, about 1.5 cm long.
- Sun, partial shade.
- Hardy to USDA Zone Native to China; found on slopes of steep ravines above 2000 m (6,560 ft) in western Hubei and Sichuan.
- On the Sino-American Botanical Expedition during the fall of 1980 seeds, thought to represent Sorbus zahlbruckneri, were collected. But a few years later it was determined that the plants derived from these seeds were a new species, subsequently named Sorbus yunan [J. Arnold Arboretum 67:265- 270(1986)].
- yunan: to honor Professor T. T. Yü, the leading Chinese plant taxonomist and student of the genus Sorbus.