Photograph from Lewis and Clark Herbarium/Academy of Natural Sciences
Buckbrush (Oregon Teatree, Redstem Ceanothus)
June 27, 1806, on the Lolo Trail, Idaho.
A member of the buckthorn family (family Rhamnaceae) which includes shrubs, woody vines, and small to large trees, rarely herbs, often spiny. Flowers small; greenish or yellowish; mostly in clusters along twigs.
Dry fans, slopes, ridges to 6,000 ft (1,800 m), cismontane chaparral, piñon-juniper and yellow-pine woodland