1. Twigs sparsely to moderately hairy, sometimes slightly glandular; silicles completely enclosed by bristly bractlets.....................C. cornuta
1. Twigs both hairy and glandular, silicles not completely enclosed by the thinly downy, lacerated bractlets.................................C. avellana
Habitat / Range
Mesic sites in the lowland and montane zones; var. cornuta - common south of 57degreeN east of the Coast-Cascade Mountains, var. californica - frequent on S Vancouver Island and the lower Fraser Valley, becoming rare to the east; E to NF and S to GA (var. cornuta) and E to ID and S to CA (var. californica).
A shade-tolerant/intolerant, submontane to montane. transcontinental North American deciduous shrub. Occurs in cool temperate and cool mesothermal climates on moderately dry to fresh. calcium-rich and nitrogen-rich soils (Moder and Mull humus forms). Sporadic in disturbed forests on water-shedding sites; its occurrence decreases with increasing latitude and precipitation. and increases with increasing continentality. Characteristic of young-seral broad-leaved forests.
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:
2022-06-30 7:27:10 PM
The information contained in the E-Flora atlas pages is derived from expert
sources as cited in each section. This information is scientifically based.
E-Flora also acts as a portal to other sites via deep links. As
always, users should refer to the original sources for complete information.
E-Flora BC is not responsible for the accuracy or completeness of the