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By: Moldenke, Harold N. (Harold Norman), - Dillman, George F - Kern, Frank D. (Frank Dunn), - Place, FrankType: ArticleIn: TorreyaVolume: 39Series:Issue: 5Date: 1939Page Range: 143--151Publication Info: Burlington, Vt, Torrey Botanical Club, 1901-1945Subjects: