Ceanothus papillosus is a species of shrub in the family Rhamnaceae. They have a self-supporting growth form. They are native to The Contiguous United States, Western North America, and The Americas. They have simple, broad leaves, blue flowers, and capsule fruit. Flowers are visited by Bombus, Apis mellifera, Myathropa florea, and Bombus melanopygus. Individuals can grow to 4.9 m.
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