I didn't find in Dr. Duke's database, any information about the uses of Frangula purshiana
Here is some basic information about Frangula purshiana.
Frangula purshiana basic info
Scientific Name: Frangula purshiana (DC.) A. Gray.
Common names in English: chittambark, western buckthorn.
Rhamnus purshiana is a species of buckthorn native to western North America from southern British Columbia south to central California, and eastward to northwestern Montana. Also known as cascara buckthorn, cascara, bearberry, and in the Chinook Jargon, chittem and chitticum; syn. Frangula purshiana, Rhamnus purshianus. The dried bark of cascara has been used for centuries as a laxative. - for more info about Frangula purshiana See link
Frangula purshiana in other websites
Frangula purshiana common names, economics importance, distributional range and more in the USDA GRIN website - See link
Search PubMed (US National Library of Medicine National Institutes of Health) for academic researches with the search term Frangula purshiana - See link
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