BEN # 119
aceska at CUE.BC.CA
Wed Nov 29 02:31:36 EST 1995
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No. 119 November 28, 1995
aceska at freenet.victoria.bc.ca Victoria, B.C.
Dr. A. Ceska, P.O.Box 8546, Victoria, B.C. Canada V8W 3S2
REXFORD F. DAUBENMIRE (1909-1995)
From: ASPT Newsletter Volume 9(4) October 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 class-
ification scheme, once considered radical, emphasized the poten-
tial vegetation of an area, rather than what vegetation existed
after human intervention. Two of his books, Plants and Environ-
ment: A Textbook of Plant Autecology (1947) and Plant Com-
munities: A Textbook of Plant Synecology (1968) served as stand-
ard reference texts for university students.
Dr. Daubenmire is survived by his wife and a daughter.--
(Abstracted from The New York Times, 8 September 1995).
HYDRILLA VERTICILLATA IN WASHINGTON STATE
From: Jenifer Parsons <JENP461 at ecy.wa.gov>
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 oppor-
tunity. 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. Mil-
lions 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
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 iden-
tification 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:
- A public meeting was held for community members, attended by
more than 100 people. At the same time the media were
notified, and several television stations and newspapers
reported on the problems.
- The Aquatic Plant Management Society held their annual
meeting in Bellevue, Washington in early July. A Hydrilla
Task Force was formed from the scientists attending this
meeting, all of whom have had experience dealing with
Hydrilla in other parts of the country. The Task Force
recommended treating the lake with aquatic herbicides and
stocking sterile grass carp to eradicate the plant. Quaran-
tining the lakes, screening the outlet, and posting signs
about Hydrilla were also encouraged.
- An experienced dive team was hired to map the Hydrilla
population and to survey several lakes near Pipe/Lucerne
Lake to see if the plant had spread. No other populations of
Hydrilla have been found.
- An emergency rule was developed to list Hydrilla as Class A
weed in the State Noxious Weed List. This provides the State
with more authority to control the plant.
- The lakes were treated with a systemic aquatic herbicide
during August and September. The objective was to weaken the
plant before they began setting tubers (which happens when
day length shorten to less than 13 hours).
- Another public meeting was held in the fall of 1995. At that
time, the Hydrilla looked weakened, and what small tubers
were produced did not appear viable.
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 at ecy.wa.gov
SYNOPSIS OF THE LICHEN GENUS PELTIGERA IN BRITISH COLUMBIA
Goward, T., B. Goffinet, & O. Vitikanen. 1995. Synopsis of the
genus Peltigera (lichenized Ascomycetes) in British Colum-
bia, with a key to the North American species. Canadian
Journal of Botany 73: 91-111.
28 species with one new species (Peltigera cinnamomea Goward)
are treated in the paper.
WWW SITES RELATED TO GARDENING
From: Barry Glick <barryg at SLIP.NET>
via <ALPINE-L at HEARN.NIC.SURFNET.NL>
The URL for the GardenWeb home page is:
The URL for the Mystery Plant Contest is:
The URL for the Crossword Puzzle Contest is:
The URL for the Garden Spider's Web is:
The URL for the Seed Guild is:
The URL for the Southern Perennials & Herbs is:
The URL for Sunshine Farm & Gardens is:
The URL for the Cyber-Plantsman is:
The URL for the GardenWeb Forums is:
The URL for the Garden Exchange is:
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-
Submissions, subscriptions, etc.: aceska at freenet.victoria.bc.ca
BEN is archived on gopher freenet.victoria.bc.ca. The URL is:
More information about the Plantbio