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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:: 2. Scanning electron micrographs of seeds. A. Q. tiowellii at 22X. B. Q. iowellii at 22X. C. Q

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:: . Eight Mile Creek, Middle Fork (Wright 1694 OSC); B. Squaw Creek (Wright 1687 OSC); C. South of Clarno

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:: ) petrol ether (b. p. 60°C) /ethyl acetate and by packing with 1. p. compressed air. Stepwise elution of

Ecology and reproduction in Collomia macrocalyx Brand (Polemoniaceae)

Creator:: Joyal, Elaine
Abstract:: Populations of Collom ia macrocalyx Brand were located and observed in order to determine the distribution, ecology, and reproductive biology of this species and probable relationships to other members of the genus. The purpose of the study was to obtain information that would explain the restricted range of the species...
Resource Type:: Masters Thesis
Full Text:: Figure 1. Collomia macrocalyx Brand ex Leiberg. A) habit (X 1); B) flower and calyx (X 5); C) flower (X

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:: Appendix B: The Specimens of LATHTKO 129 Appendix C: Additional Specimens Examined 136 LIST OF FIGURES

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:: or 3B 339a,b,c Wyoming: Park Co., E entrance to Yel- 271I, 1 or 2B lowstone N.P. Hyslop s.n. 476

Hybridization between Arctostaphylos viscida and A. canescens in Oregon

Creator:: Gottlieb, Leslie D., 1936-
Abstract:: Arctostaphylos viscida Parry and A. canescens Eastw., two well-known and frequently encountered manzanitas in the Siskiyou Mountains in southwestern Oregon, are shown to hybridize and to produce an extensive series of morphological intermediates. The hybridization occurs wherever populations of these two species meet at contact zones of serpentine and non-serpentine...
Resource Type:: Masters Thesis
Full Text:: stalked glands. Class B. Some short white hairs and some stalked glands. Class C. Only short white

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:: stress and cover of associates in those groups (Fig 11.4 b,c). This null hypothesis was not rejected in

Morphogentic studies of intraspecific hybrids of Microseris laciniata (Hook.) Sch.-Bip.

Creator:: Pires, Maria Joaquina Pinheiro
Abstract:: Microseris laciniata is a perennial, self-incompatible species classified in subgenus Scorzonella. It is morphologically the least specialized species in the genus, in contrast to the members of subgenus Microseris, which are morphologically advanced, self-compatible annuals. First-generation hybrids were available from crosses involving eight populations of two subspecies of Microseris laciniata...
Resource Type:: Masters Thesis
Full Text:: ) +2 (T1 20 0 Sr w (34 10 0 A. 6o m m c m 5o 04 4o 4-I 0 a 30 a 1. c 20 a) 0 W 10 P4 0 B

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:: Hermann, Dr. L. A. S. Johnson, Dr. Seymour H. Sohmer, and Dr. C. A. Stace. This study was financed in

ScholarsArchive@OSU

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

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

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

Ecology and reproduction in Collomia macrocalyx Brand (Polemoniaceae)

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

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

Hybridization between Arctostaphylos viscida and A. canescens in Oregon

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

Morphogentic studies of intraspecific hybrids of Microseris laciniata (Hook.) Sch.-Bip.

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

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