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By: Douglas, Gertrude E.Type: ArticleIn: American journal of botanyVolume: 5Series:Issue: 1Date: 1918-01Page Range: 36--54Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-Subjects:
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By: Douglas, Gertrude E.Type: ArticleIn: Botanical gazetteVolume: 70Series:Issue: 3Date: 1920Page Range: 211--220Publication Info: Hanover, Ind, [publisher not identified], 1876-1991Subjects:
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By: Douglas, Gertrude E.Type: ArticleIn: TorreyaVolume: 6Series:Issue: 8Date: 1906Page Range: 157--165Publication Info: Burlington, Vt, Torrey Botanical Club, 1901-1945Subjects:
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By: Douglas, Gertrude E.Type: ArticleIn: American journal of botanyVolume: 3Series:Issue: 6Date: 1916-06Page Range: 319--335Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-Subjects: