[Filberts and Hazelnuts: The Genus Corylus in the Columbia River Gorge of Oregon and Washington]

California Hazel, California Hazelnut

Corylus cornuta var. californica

Synonyms: Corylus californica, Corylus cornuta ssp. californica, Corylus cornuta var. glandulosa, Corylus rostrata var. californica, Corylus rostrata var. tracyi

Male catkin of California Hazel, California Hazelnut: Corylus cornuta var. californica (Synonyms: Corylus californica, Corylus cornuta ssp. californica, Corylus cornuta var. glandulosa, Corylus rostrata var. californica, Corylus rostrata var. tracyi)

Close-up of a male catkin of California hazelnut as seen high in the Labyrinth, mid-Columbia River Gorge.................February 28, 2010.

Catkins and leaf buds of California Hazel, California Hazelnut: Corylus cornuta var. californica (Synonyms: Corylus californica, Corylus cornuta ssp. californica, Corylus cornuta var. glandulosa, Corylus rostrata var. californica, Corylus rostrata var. tracyi) - California Hazel, California Hazelnut: Corylus cornuta var. californica (Synonyms: Corylus californica, Corylus cornuta ssp. californica, Corylus cornuta var. glandulosa, Corylus rostrata var. californica, Corylus rostrata var. tracyi)

Additional views of California hazelnut as seen high in the Labyrinth, mid-Columbia River Gorge.................February 28, 2010. Note the single male catkins of this species.

Stem leaf and beaked bract surrounding the nut of California Hazel, California Hazelnut: Corylus cornuta var. californica (Synonyms: Corylus californica, Corylus cornuta ssp. californica, Corylus cornuta var. glandulosa, Corylus rostrata var. californica, Corylus rostrata var. tracyi) - California Hazel, California Hazelnut: Corylus cornuta var. californica (Synonyms: Corylus californica, Corylus cornuta ssp. californica, Corylus cornuta var. glandulosa, Corylus rostrata var. californica, Corylus rostrata var. tracyi)

Close-ups of the leaves and fringed bract or sheath that surrounds the developing filbert as seen along the Springwater Trail between Palmblad Road and Rugg Road in southern Multnomah County, Oregon..............July 8, 2011.

California Hazel, California Hazelnut: Corylus cornuta var. californica (Synonyms: Corylus californica, Corylus cornuta ssp. californica, Corylus cornuta var. glandulosa, Corylus rostrata var. californica, Corylus rostrata var. tracyi)

Male catkins (single, not clustered in this species) of California hazelnut as seen along the Wahclella Falls Trail, Columbia River Gorge...............March 7, 2013. The reddish female flowers can be seen one node behind the male catkins on each separate branch.

Dorsal leaf surface and female bracts of California Hazel, California Hazelnut: Corylus cornuta var. californica (Synonyms: Corylus californica, Corylus cornuta ssp. californica, Corylus cornuta var. glandulosa, Corylus rostrata var. californica, Corylus rostrata var. tracyi) - Leaf of California Hazel, California Hazelnut: Corylus cornuta var. californica (Synonyms: Corylus californica, Corylus cornuta ssp. californica, Corylus cornuta var. glandulosa, Corylus rostrata var. californica, Corylus rostrata var. tracyi)

Close-ups of the leaves and fringed bract or sheath that surrounds the developing nut of Californica filbert.

Paul Slichter