BEN # 68
aceska at cue.bc.ca
Mon Jan 10 02:05:45 EST 1994
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No. 68 January 9, 1994
Address: aceska at cue.bc.ca Victoria, B.C.
Dr. A. Ceska, P.O.Box 8546, Victoria, B.C. Canada V8W 3S2
COMING EVENTS IN VICTORIA, B.C.
January 18, 1994 [Tuesday] - Swan Lake Nature House, 7:30 p.m.:
"Botany Night - Succulents" - Identification of B.C.
families: Crassulaceae and Saxifragaceae.
January 19, 1994 [Wednesday] - Newcombe Auditorium, 8:30 till
noon: "Natural History Symposium." (A presentation on
research projects conducted by the natural history
curators of the Royal B.C. Museum).
Continental breakfast will be served in the Newcombe Lobby
at 8:00 a.m.
FREE BOTANY WORKSHOPS - WASHINGTON NATIVE PLANT SOCIETY
From: Kelly McGrew <72075.1615 at CompuServe.COM>
The South Sound Chapter of the Washington Native Plant Society
is sponsoring four workshops in Olympia during January and
February to help you learn more about native plants and their
January 15, 1994 - Fern Growth and Identification by Judith
Jones, manager of Fancy Fronds, a national wholesale
grower of ferns.
January 29, 1994 - Ecology of the Lowland Forest by Dave Peter,
Forest Ecologist with the Olympic National Forest.
February 19, 1994 - Moss Identification by Kelly McGrew, amateur
February 26, 1994 - Flora of the Puget Sound and It's Origins by
John Gamon, Botanist at the Natural Heritage Program of
the Department of Natural Resources.
All workshops will be held at South Puget Sound Community Col-
lege. Sessions begin at 8:30 AM and will last until ap-
proximately noon. If there is interest, some instructors will
offer a second workshop in the afternoon from 1:00 PM until
approximately 4:30 PM. There is no charge for these workshops
but priority seating will be given to WNPS members. Because
seating is limited you must sign up in advance. To sign up
please call Kelly McGrew at 206-953-8533 or e-mail to
72075.1615 at compuserve.com.
1994 JOINT FIELD MEETING
of The Botanical Society of America, The Torrey Botanical Club,
and The Philadelphia Botanical Club.
The 1994 Joint Field Meeting will take place Sunday afternoon to
Thursday morning, June 26-30, at Frostburg State University in
western Maryland. The field trips will examine plants of shale
barrens, swamps, old-growth forests, bogs and Triassic uplands.
Evening programs will deal with aspects of the the flora
visited, with the geology of the region, and with the management
of the threatened species.
The price is $175.00 per person. This includes housing, meals,
bus transportation, trip leadership and evening programs.
For further information and a registration form, send e-mail to
kbilton at cap.gwu.edu (Kathy Bilton)
Kathy Bilton PO Box 886, Shepherdstown, WV 25443
BIOLOGICAL CONTROL OF EURASIAN WATERMILFOIL
From: Aquaphyte, vol. 13, no. 2 - Fall 1993
Interest is being shown lately in the North American weevil,
Eurhychiopsis lecontei, as a biological control agent for
Eurasian watermilfoil (Myriophyllum spicatum L.). The weevil has
been associated with declining populations of watermilfoil in
the northeastern United States.
Robert Creed and Sallie Sheldon (Dept. of Biology, Middlebury
College, Vermont) found that all life stages of the weevil are
associated with Eurasian watermilfoil. Adults lay their eggs on
the meristems; larvae burrow into and feed on the meristems
before moving down and into the stem. Pupation occurs inside the
stem. Adults feed on the stems, leaves and leaflets of watermil-
foil, and mate on the plant. They appear to concentrate feeding
on the upper portions of the plant, removing significant amounts
of photosynthetic tissue. Also, stem damage from both adults and
larvae causes watermilfoil to lose its buoyancy and sink. The
researchers suggest that the loss of buoyancy may be more sig-
nificant in controlling the plant than the loss of leaves.
The weevils appear to prefer the exotic Myriophyllum spicatum
over the native milfoil (M. sibiricum = exalbescens). Creed and
Sheldon suggest that the weevil may have either expanded its
diet to include M. spicatum or undergone a host shift from the
native plant to the exotic one.
Ref.: Creed, R.P., Jr. & S.P. Sheldon. 1993. The effect of
feeding by a North American weevil, Eurhychiopsis lecontei on
Eurasian watermilfoil (Myriophyllum spicatum). Aquatic Botany
[See also "Aquatic caterpillar may control water weed" in BEN #
From: Aquaphyte, vol. 13, no. 2 - Fall 1993
At the Red Bow Cliff Dwelling in Arizona, hundreds of prehis-
toric cigarettes have been found, some wrapped in cotton, some
tied together, and others adorned with miniature bows.
K.R. Adams of the Crow Canyon Archeological Center in Cortez,
Colorado, sampled a dozen of cigarettes and confirmed previous
suggestions: the 600-year-old smokes are made from the stem of
the giant reed (Phragmites australis), and contain tobacco
(Nicotiana spp.). The reed "barrel" of the cigarette was stuffed
with tobacco. The tobacco was lit and smoked; the tough reed
exterior did not burn, and was used again.
In her review of other research, the author found that other
"historic North America groups" (Hopi, Comanche, etc.) smoked
parts of at least 13 kinds of plants and at least one kind of
Ref.: Adams, K.R. 1990. Prehistoric reedgrass (Phragmites)
"cigarettes" with tobacco (Nicotiana) contents: a case study
from Red Bow Cliff Dwelling, Arizona. J. Ethnobiology 10: 123-
Aquaphyte is a newsletter published by the Center for Aquatic
Plants and the Aquatic Plant Information Retrieval System
(APIRS) of the University of Florida (7922 N.W. 71st Street,
Gainesville, FL 32606, USA). It is sent to 5,000 managers,
researchers and agencies in 87 countries [and it seems to be
free-of-charge !]. Besides articles on aquatic plants and
vegetation, Aquaphyte publishes excerpts from APIRS bibliog-
raphic data base, book reviews, and announcements of meetings.
THE ALASKA VEGETATION CLASSIFICATION
Viereck, L.A., C.T. Dyrness, A.R. Batten & K.J. Wenzlick. 1992.
The Alaska vegetation classification. Gen. Tech. Rep. PNW-GRT-
286, Portland, OR. 278 p.
Abstract: The Alaska vegetation classification presented here is
a comprehensive, statewide system that has been under develop-
ment since 1976. The classification is based, as much as pos-
sible, on the characteristic s of the vegetation itself and is
designed to categorize existing vegetation, not potential
vegetation. A hierarchical system with five levels of resolution
is used for classifying Alaska vegetation. The system, an ag-
glomerative one, starts with 888 known Alaska plant communities,
which are listed and referenced ...
[Glossary of terms, list of species mentioned, and 480
references. Great book! Published by: USDA, Pacific Northwest
Research Station, 333 S.W. First Avenue, P.O.Box 3890, Portland,
Oregon 97208-3890, USA]
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