Ceanothus leucodermis, with the common name Chaparral whitethorn, is a species of shrub in the buckthorn family Rhamnaceae. It is native to California and Baja California, where it grows in coastal and inland mountain habitat, such as chaparral, coniferous forest, and oak woodland.
Ceanothus leucodermis is a thorny shrub growing erect to heights approaching 4 meters. The bark is gray-white, waxy, and somewhat hairy, especially when new. The twigs harden into sharp-tipped thorns as they age. The evergreen leaves are alternately arranged, oval in shape and up to about 4 centimeters long. The edges are smooth or lined with tiny glandular teeth. The inflorescence is a long, stalked cluster of flowers in shades of blue, lavender, or white. The fruit is a sticky, three-lobed capsule about half a centimeter long. This Ceanothus is an importance browse for several types of ungulate, such as the mule deer and bighorn sheep, who prefer the new growth and shoots to the older, spiny parts.
See also 
- Jepson Manual Treatment - Ceanothus leucodermis
- USDA Plants Profile: Ceanothus leucodermis
- Ceanothus leucodermis — U.C. Photo gallery
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