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General: Deciduous shrub; stems 1-6 m tall, spreading by layering of prostrate stems that simulate stolons; young branches opposite, bright reddish to reddish-purple, later turning greyish-green.
Leaves: Opposite, deciduous, oval, pointed, 4-12 cm long, greenish above, whitish below, turning reddish in the autumn, 5-7 prominent parallel veins converging at the leaf tips, white threads running through the veins.
Flowers: Inflorescence of flat-topped terminal clusters, 2-4 cm wide; flowers white to greenish-white, 4 petals and stamens, bracts inconspicuous.
Fruits: Berrylike drupes, 7-9 mm long, white sometimes blue-tinged, each with flattened stone.
A shade-tolerant/intolerant, submontane to subalpine, transcontinental North American deciduous shrub. Occurs on very moist to wet, nitrogen-rich soils (Moder and Mull humus forms. Tolerates fluctuating groundwater tables. Widespread in boreal. temperate, and cool mesothermal climates: its occurrence decreases with increasing elevation. Plentiful in black cottonwood or red alder stands on alluvial. flooded, and stream-edge sites: often dominant in nutrient-rich wetlands. Regenerates abundantly and grows vigorously in clearings where it may hinder natural regeneration and growth of shade-intolerant conifers. Characteristic of alluvial floodplain forests.
Cornus ×californica C.A. Mey. Cornus alba var. californica (C.A. Mey.) B. Boivin Cornus alba var. occidentalis (Torr. & A. Gray) B. Boivin Cornus occidentalis (Torr. & A. Gray) Coville Cornus sericea subsp. sericea L. Cornus stolonifera Michx. Cornus stolonifera var. californica (C.A. Mey.) McMinn Cornus stolonifera var. occidentalis (Torr. & A. Gray) C.L. Hitchc.
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC:
Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for
Advanced Spatial Analysis, Department of Geography, University of British
Columbia, Vancouver. [Accessed:
2021-04-12 10:56:45 AM
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