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By: Constantine-Shull, Helen - Rice, Barry A. - Robison, Ramona - Randall, John M - Felger, Richard Stephen - Christy, John A. (John Ashton), - Zika, Peter F.Type: ArticleIn: Madroño; a West American journal of botanyVolume: 47Series:Issue:Date: 2000Page Range: 209--216Publication Info: Berkeley, California Botanical Society,Subjects: