description
Rhamnus purshiana is an evergreen tree of the Rhamnaceae family growing to
10 m (32ft) by 6 m (19ft). It is in flower from May to June, and the seeds
ripen in October. Leaves are borne in an alternate fashion at the ends of
the limbs. Leaves are simple and elliptic to oblong in shape. Mature leaves
can be up to 6" long. They have 10-15 parallel veins and a pointed tip.
During the growing season the leaves are dark green on their upper surfaces
and lighter below. Fall foliage can become a very intense yellow, with
shades of orange and red possible. In May small green-white flowers appear.
Flowers have sepals, petals, and stamens in clusters. Flowers are classified
as umbels. Flowers morph to small black berries (drupes). They are obtusely
3-angled, about the size of a large pea, and contain 3 black, shining seeds.
Immature berries are red but mature to deep purple to black.
common names & nomenclature
The common name Cascara Sagrada means "sacred bark" in Spanish.
Also known as:
chittim wahoo, sacred bark, cascara sagrada, holy bark, persian bark, puchiana bark, christ's thorn, bear wood, california buckthorn, purchiana bark, chittam bark, cascara buckthorn, cascara, bearberry, chittem, chitticum, frangula purshiana, rhamnus purshianus