|BOTANICAL ELECTRONIC NEWS|
No. 119 November 28, 1995
Rexford F. Daubenmire, a widely-recognized expert in plant ecology, died at his home in Mount Plymouth, FL, USA on 26 August 1995. Dr. Daubenmire was born in Coldwater, OH, USA on 12 December 1909. He received a bachelor's degree from Butler University, Indianapolis, IN, USA in 1930; a master's degree from the University of Colorado in 1932; and a doctorate from the University of Minnesota in 1935.
He taught at the University of Idaho for 10 years and then, in 1946, joined the Washington State University faculty. He remained at the university in Pullman for 29 years and became professor emeritus of botany after his retirement.
Dr. Daubenmire's research involved classifying the forest and grassland vegetation of the Pacific Northwest. His classification scheme, once considered radical, emphasized the potential vegetation of an area, rather than what vegetation existed after human intervention. Two of his books, Plants and Environment: A Textbook of Plant Autecology (1947) and Plant Communities: A Textbook of Plant Synecology (1968) served as standard reference texts for university students.
Dr. Daubenmire is survived by his wife and a daughter.-- (Abstracted from The New York Times, 8 September 1995).
On June 1, 1995, Hydrilla verticillata was discovered in Washington State. Hydrilla is an aggressive non-native aquatic plant which will out-compete native plants if given the opportunity. Where it has become established (in the southern United States as far north as Delaware and west to California) its rapid growth has radically changed aquatic environments. Millions of dollars are spent each year attempting to control its growth. Because this is the first known population of Hydrilla in the Pacific Northwest, aggressive action was taken to attempt its eradication.
The Hydrilla population is located in the 73 acre Pipe/Lucerne lake system in southern King County, approximately 20 miles southeast of Seattle. Identification was confirmed by the presence of distinguishing tubers and through enzyme analysis conducted at the University of California in Davis. The enzyme analysis also indicated that this Hydrilla population is the monoecious variety. The plants were well distributed throughout the lake, but are still in a pioneering stage. After the identification was confirmed, the State Department of Ecology began working closely with personnel from King County Surface Water Management Division to decide on plan of action. The following sequence of events ensued:
Successful eradication of this plant will be a long term project. Decisions will be made late next spring when the plants begin growth whether to continue with herbicide treatments, stock sterile grass carp, or both.
Jenifer Parsons, Washington State Department of Ecology, Environmental Investigations and Laboratory Services Program, P.O. Box 47710, Olympia, WA 98504-7710; phone: 360-407-6679, FAX: 360-407-6884; e-mail: JENP461@ecy.wa.gov
28 species with one new species (Peltigera cinnamomea Goward) are treated in the paper.
Rita Heaton of Devon England, holder of the NCCPG Sisyrinchium collection has written a very informative article about her collection and growing Sisyrinchium.
The article can be found at: http://www.gardenweb.com/cyberplt/gengen/sisyrin.html [link outdated 8/21/96]
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