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Filtering by: Creator D���Almeida, Arsene Remove constraint Creator: D���Almeida, Arsene Degree Field Botany Remove constraint Degree Field: Botany

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  • A biosystematic study in the genus Aster, section Aster, in western North America

    Creator:
    Dean, Milton Lee
    Abstract:
    A biosystematic investigation was undertaken in 15 species and three subspecies of the genus Aster, in western North America. Previous studies had been based entirely on external morphological features, and it was believed that much could be learned about the natural affinities of the taxa by exploring their cytological and...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF Milton Lee Dean for the Ph. D