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Creator:: West, Neil E.
Abstract:: Montane forest vegetation as it occurs on the east flank of the central Oregon Cascades has provided excellent conditions for a "natural experiment" in the use of various methodologies in studying vegetational distribution. This "experiment" has reflected on some theory and practice for the discipline of plant synecology. Detailed descriptions,...
Resource Type:: Dissertation

Creator:: Clothier, Glen Warren
Abstract:: The investigation was conducted from January 1965 to March 1966. An intensive effort was made to obtain large numbers of animals, as it is believed that unavailability of specimens has been the limiting factor in the amount of research concerning this species. Two hundred and sixty-nine animals were collected. They...
Resource Type:: Masters Thesis
Full Text:: method. The line method is mentioned by Stebbins (1954), and was intro- duced to the writer by Robert

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:: Quartz Mt. summit. ssp. intermedius 395 California: Eldorado Co., head of Fallen Leaf Lake. Stebbins

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:: " and to have added new species in geologically recent times (Stebbins, 1950, p. 551). ). Studies of

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:: , John Thomas Howell, C. Leo Hitchcock, Marion Ownbey, Thomas Soderstrom and G. Ledyard Stebbins, Jr

Creator:: Haertel, John David
Abstract:: Experimental crosses between Rana pretiosa pretiosa Baird and Girard and Rana cascadae Slater, resulted in viable hybrids. Reciprocal differences at the time of fertilization are indicated. A high level of success in producing viable hybrids can be obtained if Rana pretiosa pretiosa is the female of the parent species, The...
Resource Type:: Masters Thesis
Full Text:: the deeper tissues. The pattern on the surface appeared independent of the pat- tern in the deeper

Creator:: Altig, Ronald Gail
Abstract:: Developmental series of Rana pretiosa (110 specimens), R. cascadae (100 specimens) and R. aurora (115 specimens) were bone stained and cleared in glycerin. The growth and developmental patterns of the skull and selected bones were followed from the first appearance of bone through adult stages. The sequential appearance of the...
Resource Type:: Dissertation
Full Text:: ) were bone stained and cleared in glycerin. The growth and developmental pat- terns of the skull and

Creator:: Oregon State College. Agricultural Experiment Station and Zielinski, Quentin Bliss, 1919-
Abstract:: Published March 1964. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: Plant Pat. 642 This red-striped apple originated in 1944. It ripens about 7 to 10 days be- fore

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