Rhamnus purshiana. N.O. Rhamnaceae.
Synonym ► Sacred Bark, Chittem Bark. Habitat ► California and British Columbia. Features ► Bark in quills about three-quarter inch wide by one-sixteenth inch thick,
furrowed-longitudinally, purplish-brown in colour. Inner surface longitudinally
striated, transversely wrinkled. Fracture pale brown, or dark brown when older.
Persistently bitter taste, leather-like odour.
Older bark is preferred, younger sometimes griping. Part used ► Bark.
Action ► Tonic laxative.
In habitual constipation due to sluggishness and atony of the lower bowel, and for digestive disorders generally. Doses for chronic constipation, firstly 1/2 to 1 teaspoonful at bedtime, afterwards 5-10 drops before each meal, of the fluid extract.