Index Catalog // ScholarsArchive@OSU

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

Creator:: Wright, Carolyn E.
Abstract:: Astragalus diaphanus is a rare plant endemic to the John Day River drainage of north-central Oregon. This species has several interesting features, including the dimorphism of its fruit and its geographical isolation from the two nearest taxonomically related species, which occur in Colorado. This study addressed the species' distribution and...
Resource Type:: Masters Thesis
Full Text:: . Chambers, Dr. T.C. Moore, Dr. R. Frenkel, and Dr. D. Baisted, for their interest and careful reading of

Calochortus howellii : ecology of a rare serpentine endemic, and comparison with the new species, C. umpquaensis (Liliaceae)

Creator:: Fredricks, Nancy Ann
Resource Type:: Masters Thesis
Full Text:: Chatfield, Dr. Dave Dalton, Dee Lusk, Katie Marsden, Bob Meinke, Steve Shelly, and Carolyn Wright provided

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:: adscendens 106 . 3. Aster bernardinus 115 - , 4. Aster lentus . .. 118 ----r--- 5. Aster chilensis

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

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:: coefficients (r). In order to determine the multivariate structures of the morphological data, the entire

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

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:: UJ UJ CCU r- t 15 L 0) 10 z 0 60 50 40 30 20 10 COMMUNITY 3 COMMUNITY 4 ALL COMMUNITIES a

Biosystematics of the Mimulus nanus complex in Oregon

Creator:: Ezell, Wayland Lee, 1937-
Abstract:: A biosystematic study was made in seven populations of Mimulus nanus Hook. & Arn. and M. cusickii (Greene) Piper (Scrophulariaceae) in central Oregon, and a taxonomic revision was made of the four species of section Eunanus reported from Oregon--M. nanus, M. cusickii, M. clivicola Greenm. and M. jepsonii Grant. Mimulus...
Resource Type:: Dissertation
Full Text:: i 0 ipi, , ,..1... L A odi r,,,r,14.I WAAL ,oan I I 0 i 41 AllLiMA '--initintit,WWITMAnIMI

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:: 10 Mimulus Stigma Lobe Data '44::4.OW.0*:.:4 / g.M.:4. 'OK*.r ig:.;i 11.11.110.41V 1,....V.S. **V

Phenotypic variation in diploid and tetraploid populations of Claytonia perfoliata (s.l.) (Portulacaceae)

Creator:: Miller, John M.
Abstract:: Meiotic chromosome counts from 200 populations of Claytonia (Montia) perfoliata (sensu lato) reveal a polyploid pillar complex based on three morphologically different, chemically distinct, and geographically defined diploids. The basic chromosome number is x=6. Diploid C. perfoliata Willdenow with linear juvenile leaves and deltoid mature basal leaves ranges southeastward from...
Resource Type:: Dissertation
Full Text:: Biologicas), Dr. John R. Reeder (University of Arizona), Dr. John R. Swanson (California State University

ScholarsArchive@OSU

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

Calochortus howellii : ecology of a rare serpentine endemic, and comparison with the new species, C. umpquaensis (Liliaceae)

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

Taxonomy and ecology of Mentzelia mollis Peck and related species

Morphological and cytological variation in Trillium albidum Freeman (Liliaceae)

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

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

Biosystematics of the Mimulus nanus complex in Oregon

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

Phenotypic variation in diploid and tetraploid populations of Claytonia perfoliata (s.l.) (Portulacaceae)

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