BEN # 119

Adolf Ceska aceska at CUE.BC.CA
Wed Nov 29 02:31:36 EST 1995

BBBBB    EEEEEE   NN   N             ISSN 1188-603X
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BBBBB    EEEEE    NN N N             BOTANICAL
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BBBBB    EEEEEE   NN   N             NEWS

No. 119                              November 28, 1995

aceska at        Victoria, B.C.
 Dr. A. Ceska, P.O.Box 8546, Victoria, B.C. Canada V8W 3S2

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).

From: Jenifer Parsons <JENP461 at>

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
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  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


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.

From: Barry Glick <barryg at SLIP.NET>

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-

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