Search Constraints

Start Over
Filtering by: Creator Scrivani, James V. Remove constraint Creator: Scrivani, James V. Academic Affiliation Botany and Plant Pathology Remove constraint Academic Affiliation: Botany and Plant Pathology Advisor Chambers, Kenton L. Remove constraint Advisor: Chambers, Kenton L.

Search Results

  • Cytotaxonomic studies in the Artemisia ludoviciana polyploid complex of the Pacific Northwest

    Creator:
    Estes, James R.
    Abstract:
    The Artemisia ludoviciana polyploid complex is a highly polymorphic assembledge of eight taxa in the Pacific Northwest, with a chromosome base number of x=9. A cytogenetic analysis of this complex was carried out to determine the sources of its variation, the types of polyploidy present, and the genetic processes active...
    Resource Type:
    Dissertation
    Full Text:
    Polyploid Complex of the Pacific Northwest AN ABSTRACT OF THE THESIS OF James Russell Estes for the

  • 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:
    Robert James Meinke for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on

  • 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:
    Dr. James Rohlf of the State University of New York for their help in getting NTSYS-pc and my data

  • 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:
    ArVydas Grybauskas. Mary Allcott, W. Roderick and especially James R. Griffin graciously responded to

  • 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:
    Taxonomic Utility of Morphological Characteristics 43 V. Taxonomy 59 Key to the Pacific States Taxa 60

  • 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:
    for me -- Dr. James Estes, Mr. Wayland Ezell, Mr. Alan Legge, and Mr. Robert Carr. Appreciated also is