Corylus
filbert, hazelnut
2 species
2 subspecies and varieties
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Corylus avellanacommon filbert, European hazelnut
Distribution: Widely planted as an ornamental and occasionally naturalizing in western Washington lowlands; British Columbia south to Oregon.
Habitat: Abandoned plantings, roadsides, waste sites, forest edge.
Origin: Introduced
Flowers: January-April
Growth Duration: perennial
Corylus cornutabeaked hazelnut
Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern North America.
Habitat: Forest edge and openings, thickets, and rocky slopes at low to middle elevations.
Origin: Native
Flowers: January-March
Growth Duration: perennial
ssp. californica – California hazelnut
ssp. cornuta – beaked hazelnut