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By: Verdoorn, Frans,Edition:Publication info: The Hague : Martinus Nijhoff, 1930Volume:Series:Holding Institution: Biblioteca Digital del Real Jardín Botánico de MadridSubjects:BHL Collections:
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By: Verdoorn, Frans,Type: ArticleIn: Lasca leavesVolume: 4Series:Issue: Spring 1954Date: 1954Page Range: 30-35Publication Info: Arcadia, Calif, California Arboretum Foundation, 1950-1976Subjects:
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By: Verdoorn, Frans,Type: ArticleIn: Farlowia :a journal of cryptogamic botanyVolume: 2Series:Issue: 1Date: 1945Page Range: 71--82Publication Info: Cambridge, Mass, Farlow Library and Herbarium of Harvard University, 1943-1955Subjects: