[The Buckthorn Family in the Cascade Mountains of Oregon and Washington]

Cascara and Buckthorns of the Cascade Mountains of Oregon and Washington

The Genus Rhamnus

California Coffeeberry, Coffeeberry: Rhamnus californica ssp. occidentalis (Synonym: Frangula californica)

California Coffeeberry: Rhamnus californica ssp. occidentalis

Alder Buckthorn, Alder-leaf Buckthorn, Alder-leaved Coffeeberry: Rhamnus alnifolia -

California Coffeeberry, Coffeeberry: Rhamnus californica ssp. occidentalis (Synonym: Frangula californica, Frangla californica ssp. occidentalis, Rhamnus californica var. occidentalis) -

Holly-leaf Redberry, Redberry: Rhamnus ilicifolia (Synonyms: Rhamnus crocea, Rhamnus crocea ssp. ilicifolia) -

Buckthorn, Cascara, Chittam: Rhamnus purshiana (Synonyms: Frangula purshiana, Frangula purshiana ssp. annonifolia,  Frangula purshiana ssp. purshiana) - Note: This taxon is referred to as Frangula purshiana ssp. purshiana in Washington.

Sierra Coffeeberry: Rhamnus rubra (Synonyms: Frangula rubra, Frangula rubra ssp. rubra)


Paul Slichter E-mail