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Sorbus scopulina Greene
Cascade mountain-ash, Greene's mountain ash, Western mountain-ash
USDA Symbol: sosc2
USDA Native Status: Native to U.S.
Cascade mountain-ash is a shrub or shrub-like tree with several erect stems to 3-12 ft. Bark is reddish. Deciduous leaves are pinnately compound with 11-15 shiny, oblong leaflets. Small, white flowers occur in large terminal clusters and are followed by persistent, red-orange berries. A shrub forming dense clumps, or rarely a small tree, with many small white flowers and small, applelike fruit.
This shrubby species takes the form of a small tree in southeastern Alaska. The common name honors Edward Lee Greene (1843-1915), the United States botanist who prepared the description. Birds and mammals eat the fruit.
Plant CharacteristicsDuration: Perennial Habit: Shrub Leaf:
Green Autumn Foliage:
yesFruit: Size Class:
Bloom InformationBloom Color: White
Bloom Time: Jun
AK , CA , CO , ID , MT , ND , NM , NV , OR , SD , UT , WA , WY Canada: AB
, BC Native Distribution:
W. Alt. to AK, s. to NM, UT & Tulare Co., CA; also Black Hills Native Habitat:
Canyons; wooded slopes; stream banks; 4000-9000 ft. USDA Native Status: L48(N), AK(N), CAN(N)
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade , Shade
Soil Moisture: Moist
CaCO3 Tolerance: Low
Soil Description: Rich soils.
Conditions Comments: Not Available
BenefitUse Wildlife: Grouse, cedar waxwings, and grosbeaks consume the berries.
Conspicuous Flowers: yes
Fragrant Flowers: yes
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Native Seed Network
- Corvallis, OR
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Record Modified: 2007-07-01
Research By: TWC Staff