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  • Autecology, reproductive ecology, and demography of Astragalus australis var. olympicus (Fabaceae)

    Creator:
    Kaye, Thomas N.
    Abstract:
    The goal of this study was to gather information on the autecology, reproductive ecology, and population dynamics of Astragalus australis var. olympicus as a baseline for conservation strategies and to help explain its restricted range. Approximately four thousand individuals occurred in four known population centers in the Olympic Mountains, Olympic...
    Resource Type:
    Masters Thesis
    Full Text:
    australis var. olympicus populations in the Olympic Mountains, Clallam County, Washington. 7 CHAPTER II

  • Systematic and reproductive studies of Mimulus (Scrophulariaceae) in the Pacific Northwest : implications for conservation biology

    Creator:
    Meinke, Robert James
    Abstract:
    The Mimulus washingtonensis complex is a group of morphologically similar species centered in the Pacific Northwest. All are rare, and most are under consideration for listing as endangered. Morphometric and pollination data were used in developing a revised taxonomy for the group. Five species and two varieties are recognized. Mimulus...
    Resource Type:
    Dissertation
    Full Text:
    (Scrophulariaceae) in the Pacific Northwest : implications for conservation biology AN ABSTRACT OF THE THESIS OF

  • Morphological and cytological variation in Trillium albidum Freeman (Liliaceae)

    Creator:
    Bledsoe, Karen E.
    Abstract:
    This work was performed on Trillium albidum Freeman (Liliaceae), to clarify the pattern of morphological variation between the small-flowered populations at the northern limit of its range ( T. parviflorum Soukup) and the larger-flowered populations from southern Oregon and northern California. It was hypothesized that only a single species of...
    Resource Type:
    Masters Thesis
    Full Text:
    in a narrow band from Pierce County, Washington, southward through the Puget Trough and

  • A biosystematic study of some North American species of Agrostis L. and Podagrostis (Griseb.) Scribn. & Merr.

    Creator:
    Carlbom, Curt Gerald, 1932-
    Abstract:
    A taxonomic investigation was made of 24 taxa belonging to the section Trichodium (Michx.) Trin., of Agrostis, and the genus Podagrostis. Experimental methods were employed, including: uniform garden culture of transplants and plants grown from seeds collected in natural populations; breeding studies; physiological and phenological investigations; cytological studies; ecological studies...
    Resource Type:
    Dissertation
    Full Text:
    , and to Miss Georgia Mason, Mr. Steven Ebert and Dr. Chris Kjeldsen for contributing seeds of native

  • A systematic study of Lathyrus vestitus Nutt. ex T. & G. (Fabaceae) and allied species of the Pacific Coast

    Creator:
    Broich, Steven L.
    Abstract:
    Eight species of Lathvrus (Fabaceae, Faboideae) endemic to the Pacific Coast of North America were the subject of a systematic investigation. Taxa studied included Lathvrus vestitus, Nutt. ex T. & G., L. laetif lorus Greene, L.. iepsonii Greene, £,. splendens Kellogg, L. polvphvllus, Nutt. ex T. & G., L. holochlorus...
    Resource Type:
    Dissertation
    Full Text:
    . (Fabaceae) and allied species of the Pacific Coast AN ABSTRACT OF THE THESIS OF Steven Leo Broich for

  • Origin and distribution of polyploid Achillea (Compositae) in western North America

    Creator:
    Tyrl, Ronald J.
    Abstract:
    A cytogeographical study was made of populations of tetraploid (n=18) and hexaploid (n=27) Achillea millefolium (Compositae- Anthemideae) from the Pacific Coast states. There is a complex distributional pattern, involving overlapping ranges, mixed populations, migration of one form into areas occuplied by the other, pentaploid hybrids, and septaploid and octoploid plants....
    Resource Type:
    Dissertation
    Full Text:
    continental except for the coastal areas of north- western Washington and southwestern Oregon. In these two

  • 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
    Full Text:
    Oregon north of Josephine County and in Washington 6 A. Inflorescence of Juncus exiguus subsp. gracilis

  • Taxonomy and ecology of Mentzelia mollis Peck and related species

    Creator:
    Glad, Judith B.
    Abstract:
    A study was made to clarify the relationships of Mentzelia mollis Peck and two poorly understood taxa of Mentzelia (Loasaceae) to the other members of the genus, its sections, and its subsections, and to describe the general ecology of each taxon. Within the genus, the section Trachyphytum is characterized by...
    Resource Type:
    Masters Thesis
    Full Text:
    species AN ABSTRACT OF THE THESIS OF JUDITH B. GLAD for the degree MASTER OF SCIENCE (Name of student

  • The gene-ecology of Crepis nana Richardson and Crepis elegans Hooker in Arctic and Alpine North America

    Creator:
    Legge, Allan Herbert, 1942-
    Abstract:
    A gene-ecological transplant study was made on populations of the Crepis nana and C. elegans complex from the Arctic and Alpine of North America. Transplants were collected from the Brooks Range, Eagle Summit, and Alaska Range in Alaska, the Rocky Mountains in Alberta, the Olympic Mountains in Washington, the Wallowa...
    Resource Type:
    Dissertation
    Full Text:
    elegans hooker in arctic and alpine North America AN ABSTRACT OF THE THESIS OF ALLAN HERBERT LEGGE for

  • Cytogeography of Achillea millefolium L. in western Oregon

    Creator:
    Tyrl, Ronald J.
    Abstract:
    A cytogeographic study, the relationship between chromosome number and geographical and ecological distribution, was made of the tetraploid and hexaploid chromosome forms of Achillea millefolium L. in western Oregon. Principal objectives of the investigation were three. First was a determination of the exact distributions of the two levels, as previous...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Ronald Jay Tyrl for the (Name) in Botany (Systematic Botany