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