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Filtering by: Creator Thompson, Joanne Mann Remove constraint Creator: Thompson, Joanne Mann Advisor Chambers, Kenton L. Remove constraint Advisor: Chambers, Kenton L. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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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

  • A revision of Juncus subgenus genuini (Juncaceae) in the Pacific states

    Creator:
    Lint, Harold LeRoy
    Abstract:
    A study was made of the subgenus Genuini of the genus Juncus in the Pacific States, California, Oregon and Washington. Extensive morphological comparisons, geographical distributions, habitat differences and observations of apparent presence or absence of natural hybrids provided the major data sources. Cytological studies were made, but were inconclusive. Eleven...
    Resource Type:
    Dissertation

  • Taxonomy of Phacelia section Miltitzia (hydrophyllaceae)

    Creator:
    Halse, Richard R.
    Abstract:
    A systematic study was made of the species comprising Phacelia section Miltitzia. These species, which are commonly found in the Great Basin physiographic province of western North America, are distinguished from other members of Phacelia by their yellow, marcescent corollas and their transversely corrugated seeds. This project utilized morphological, cytological,...
    Resource Type:
    Dissertation