Corylus cornuta var. cornuta Marshall
beaked hazelnut
Betulaceae (Birch family)

Introduction to Vascular Plants

Photograph

© Virginia Skilton     (Photo ID #26049)


Map

E-Flora BC Static Map

Distribution of Corylus cornuta var. cornuta
Click here to view the full interactive map and legend

Species Information

General:
Deciduous shrub, 1-3 m tall with many stems, densely clumped or spreading by suckers; twigs sparsely to moderately hairy, sometimes glandular.
Leaves:
Alternate, deciduous, elliptic to oval, leaf blades heart-shaped with a sharp-pointed tip, doubly saw-toothed, paler below than above, 4-10 cm long, turning yellow in the fall.
Flowers:
Male flowers in catkins appearing before the leaves in spring; female flowers in a very small catkin with protruding red stigmas.
Fruits:
Edible hard-shelled nuts completely enclosed by bristly bractlets, in 2's or 3's at the end of branches, barely 1.5 cm long, thinly hairy or glabrous.
Notes:
Two varieties occur in BC:

1. Involucral beaks about twice as long as the fruit; silicles thinly short-hairy; twigs sparsely hairy............... var. cornuta

1. Involucral beaks about equal in length to the fruit; silicles glabrous; twigs hairy, sometimes glandular............... var. californica (A. DC.) Sharp

SourceThe Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Ecology

Ecological Framework for Corylus cornuta var. cornuta

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Avg

Min

Max

Elevation (metres)
470 470 470
Slope Gradient (%)
19 19 19

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

163 163 163
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 4 4
Modal Nutrient Regime
Class
D
# of field plots
 species was recorded in:
1
Modal BEC Zone Class
IDF

All BEC Zones (# of stations/zone) species was recorded in

IDF(1)

Habitat and 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).

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Corylus rostrata Aiton