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By: Armstrong, Wayne P. - Parfitt, Bruce D - Butterwick, Mary L. - Oberbauer, Thomas A - Haines, Robert D - Evans, Charles J - Marley, Gregory A - Wagner, Warren LambertType: ArticleIn: Madroño; a West American journal of botanyVolume: 28Series:Issue:Date: 1981Page Range: 37--43Publication Info: Berkeley California Botanical SocietySubjects: