Native California Roses
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copyright Barbara Ertter, 2001
Rosa spithameaS. Watson
(Los Osos variant "granulata")
Prickles can be significantly larger & thicker-based than in typical R. spithamea.
(Photo copyright Barbara Ertter; voucher: Ertter & Chipping 14880, Clark Valley Road, San Luis Obispo Co., California USA)