Sorbus sitchensis

Sitka Mountain-ash
Flowers are 80 or fewer, borne in flat compound cymes three or four inches across.
Scientific classification
Kingdom:	Plantae
Division:	Magnoliophyta
Class:	Magnoliopsida
Order:	Rosales
Family:	Rosaceae
Genus:	Sorbus
Subgenus:	Sorbus
Section:	Tianshanicae
Species:	S. sitchensis
Binomial name
Sorbus sitchensis M.Roem.

Sorbus sitchensis, also known as Sitka Mountain-ash, is a small shrub of the western United States.

Description

A multistemmed shrub, it is indigenous to the Pacific Coast of North America, from Alaska to northern California and eastward to Idaho and western Montana.

Sorbus sitchensis fall foliage and fruit

The otherwise similar Sorbus scopulina has yellow-green sharp-pointed leaflets that are sharply serrated over most of their length.

• Winter buds: Not sticky with rusty hairs.
• Leaves: Alternate, compound, six to ten inches long, Leaflets seven to ten, blue-green, lanceolate or long oval, with rounded tip, toothed usually from the middle to the end. In autumn they turn yellow, orange and red. Stipules leaf-like, caducous.
• Flowers: After the leaves are fully grown. White, small, 80 or fewer, borne in flat compound cymes three or four inches across.
• Fruit: Berry-like pome, globular, one-quarter of an inch across, bright pinkish red, borne in cymous clusters.