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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:: ) endemic to the Pacific Coast of North America were the subject of a systematic investigation. Taxa

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:: the Pacific Coast states. There is a complex distributional pattern, involving overlapping ranges

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:: taxa in the Pacific region of the United States that have long been a source of confusion to

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:: have southern distributions in the Pacific Northwest, northern United States and California. Hultén

Biosystematics of a Western North American polyploid complex in the genus aster

Creator:: Guppy, Geraldine Anne Allen
Abstract:: Species relationships were investigated in a western North American polyploid complex in the genus Aster (Asteraceae). A combination of cytological, genetical, chemical, morphological and numerical approaches was employed. Fifteen presently recognized species were included in the study, and populations were sampled throughout most of the range of the group. Living...
Resource Type:: Dissertation
Full Text:: Biosystematics of a Western North American polyploid

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:: United States alone, nearly 700 species have been estimated to be critically imperilled (Mlot, 1989

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:: Francisco Bay region. Raven 16564. Oregon: Coos Co., Sunset Bay State Park. A. cualekii_ 2n = 81I 440

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:: to the genus in the western United States (Kurabayashi, 1963; Fukuda, 1967; Fukuda and Channel

Taxonomic studies of the Eucephalus complex of Aster in the Pacific Northwest

Creator:: Thompson, Dennis Dean
Resource Type:: Masters Thesis
Full Text:: interior North- western United States; Aster ledophyllus (A. -;;ray) A. Gray, a species extending through

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:: most widespread in the xerophytic Great Basin and Columbia Plateau of the western United States. Its

ScholarsArchive@OSU

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

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

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

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

Biosystematics of a Western North American polyploid complex in the genus aster

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

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

Morphological and cytological variation in Trillium albidum Freeman (Liliaceae)

Taxonomic studies of the Eucephalus complex of Aster in the Pacific Northwest

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

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