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Filtering by: Creator Smith, Charles W. (Charles Wesley), b. 1877. Pacific Northwest Americana Remove constraint Creator: Smith, Charles W. (Charles Wesley), b. 1877. Pacific Northwest Americana Academic Affiliation Botany and Plant Pathology Remove constraint Academic Affiliation: Botany and Plant Pathology

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  • Synecology of the white-oak (Quercus garryana Douglas) woodlands of the Willamette Valley, Oregon

    Creator:
    Thilenius, John F., 1931-
    Abstract:
    Quercus garryana dominated plant communities are found in the interior coastal valleys and on foothills from southeastern Vancouver Island, British Columbia, south to San Francisco, California. They occur as savannas, intermixed with a variety of conifers, and in almost pure stands. The diversity of habitats occupied by the species and...
    Resource Type:
    Dissertation
    Full Text:
    expeditions to the Pacific Northwest were either accompanied by trained naturalists or had keen observers

  • Dry coniferous forests in the Western Oregon Cascades

    Creator:
    Means, Joseph E.
    Abstract:
    Pseudotsuga menziesii dominates the forests of the Pacific Northwest. But though it is dominat, Tsuaa heteroohylla or Abies amabilis is usually climax. Many researchers have studied Pseudotsuga on the widespread mesic sites where it is seral, but few have examined the relatively rare ecosystems in which Pseudotsuga or its associate...
    Resource Type:
    Dissertation
    Full Text:
    species in most of the forested land west of the Cascade crest in the Pacific Northwest. Research on its

  • 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:
    appear- ing in W. J. Hooker's Flora Boreali- Americana in 1834, and in A. P. De Candolle's Prodromus

  • The ecology and reproduction of Sophora leachiana Peck (Fabaceae)

    Creator:
    Crowder, Cheryl Alison
    Abstract:
    The goal of the study was to collect data on the ecology and reproduction of Sophora leachiana in order to help explain the rarity and restricted range of this species. There are 13 known populations of S. leachiana, occurring in a 29 by 6.4 km area in the Siskiyou Mountains...
    Resource Type:
    Masters Thesis
    Full Text:
    B. L. Turner, and S. stenophylla A. Gray. The remaining herbaceous species are Asiatic: S