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Creator:: Morrison, Laura A.
Abstract:: Comparative morphological and anatomical studies of the dispersal mechanisms characterizing the wheat complex (Triticum L. and Aegilops L.) have documented patterns of adaptive radiation which may have significance for evolutionary relationships. These patterns, which form an array of diverse types of diaspores among the diploid taxa, appear conceptually to have...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE THESIS OF Laura A. Morrison for the degree of Doctor of Philosophy in Botany and Plant

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:: . in S stematic Botany Major (Name) (Degree) Date thesis is presented to6 Title A Biosystematic

Creator:: Kaplan, Hesh J.
Abstract:: The Brassicaceae, Mustard Family, is a well marked natural family, whose tetramerous flowers, tetradynamous stamens, and distinctive bi- carpellary fruits, clearly distinguish it from related families. It is a large family of some 3, 000 recognized species and over 300 genera. Although numerous attempts have been made over the past...
Resource Type:: Dissertation
Full Text:: of Doctor of Philosophy in Botany and Plant Pathology presented on April 19, 1977 Title: A

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:: A systematic study of Lathyrus vestitus Nutt. ex T. & G

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:: Abstract approved: Kenton Lee Chambers The Artemisia ludoviciana polyploid complex is a highly poly

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:: for Privacy Dr. enton L. Cham6ers Microseris laciniata is a perennial, self-incompat- ible species

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:: , reproductive ecology, and population dynamics of Astragalus australis var. olympicus as a baseline for

Creator:: Crowder, Cheryl Alison
Abstract:: The goal of the study was to collect data on the ecology and reproduction of Sophora leachiana in order to help explain the rarity and restricted range of this species. There are 13 known populations of S. leachiana, occurring in a 29 by 6.4 km area in the Siskiyou Mountains...
Resource Type:: Masters Thesis
Full Text:: , occurring in a 29 by 6.4 km area in the Siskiyou Mountains of southwestern Oregon. The species acts as a

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:: Abstract approved: Redacted for Privacy Kenton L. Chambers A biosystematic study was made in seven

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