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

The Genus Rhamnus

Leaves and axillary flower clusters of Cascara, Cascara Buckthorn, False Buckthorn: Rhamnus purshiana (Synonym: Frangula purshiana)

Cascara: Rhamnus purshiana

Alder Buckthorn, Alder-leaf Buckthorn, Alder-leaved Coffeeberry: Rhamnus alnifolia (Synonym: Rhamnus californica var. occidentalis) -

California Buckthorn: Rhamnus californica ssp. occidentalis (Synonym: Frangula californica) -

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

Cascara, Cascara Buckthorn, False Buckthorn: Rhamnus purshiana (Synonym: Frangula purshiana) -

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