From aceska@cue.bc.caMon May 1 18:15:48 1995 Date: Sat, 29 Apr 1995 07:23:31 -0700 From: Adolf Ceska To: ben@cue.bc.ca Subject: BEN # 100 BBBBB EEEEEE NN N ISSN 1188-603X BB B EE NNN N BBBBB EEEEE NN N N BOTANICAL BB B EE NN NN ELECTRONIC BBBBB EEEEEE NN N NEWS No. 100 April 29, 1995 aceska@freenet.victoria.bc.ca Victoria, B.C. ----------------------------------------------------------- Dr. A. Ceska, P.O.Box 8546, Victoria, B.C. Canada V8W 3S2 ----------------------------------------------------------- BOTANY BC - JUNE 20 - 22, 1995 - SOUTH CHILCOTIN From: Allen Banner Planned location: South Chilcotin, Timberwest Gaspard Creek Logging Camp (approx. 90 km southwest of Williams Lake; 40 km south of Riske Creek) Accommodation: Limited indoor sleeping accommodation (?30 people) but plenty of camping opportunities Dates: June 21 through 23rd, 1995 Tentative agenda: June 21st: Registration and icebreaker (evening) June 22nd (am): indoor talks June 22rd (pm): field trip to grasslands and wetlands June 23rd (all day): extensive field trip to grasslands and wetlands (2 groups) Field trips are planned to: Jamieson Meadows (large diversity of wetlands), Gang Ranch/Dog Creek grasslands, Junction grasslands (Junction of Chilcotin and Fraser Rivers), Farwell Canyon, Other Chilcotin grasslands and wetlands in the area. Confirmed Speakers: Trevor Goward (grassland lichens), Shirley Saulkeld (botanical illustrations), Maryanne Ignace / Nancy Turner (ethnobotany), Allen Banner / Will Mackenzie (BC wetland/riparian classification), Anna Roberts (local wetlands - field trip). Contact: Allen Banner (ABANNER@mfor01.gov.bc.ca ; tel 604-387- 6688) soon if you are interested in attending. A mailer will be going out within 2 weeks to our ever-increasing list of Botany BC "ites" with more details. MOSQUITO FERN - AZOLLA CAROLINIANA - NEW FOR BRITISH COLUMBIA From: Frank Lomer, Honourary Research Associate, UBC Herbarium, Vancouver, B.C. c/o In December 1994, I was exploring a peat bog in South Burnaby and came across a small plant I had never seen before. It was floating at the edge of a large pond in an old peat extraction site with Lemna minor and Spirodella polyrhiza. It was a Mosquito Fern (Azolla sp.), a small free floating annual fern- like plant. Two species of the genus Azolla are known to occur in British Columbia: Azolla filiculoides Lam. is an introduced plant from Europe. We have collections at UBC only from within the city of Vancouver. I have not seen it myself except in a nursery pond (sold?) with aquatics. It can be distinguished by its larger size (1-10 cm diameter) and the rather thickly papillose upper leaf lobes. Azolla mexicana K.B. Presl is known in Canada only from several places around Shuswap Lake (Brunton 1986, Goward 1994). There is some dispute as to whether it is native or intro- duced there. It can be identified under a microscope by the crosswalls within the barbed hairs (glochidia) projecting from the massulae (an aggregation of microspores). The plants I collected were tiny (all under 1 cm, mostly only 5 mm in diameter) and the upper leaf surfaces were smooth. The plants contained no spores. A month later, I found the same plant growing in a deep ditch transecting a huge cultivated cranberry field in Richmond near the Fraser River. It was growing so thickly that it formed a mass of living and dead plants a few meters square and more than 10 cm thick in places. It was clogging the culvert debris screen and lots of dead plants had accumulated along the ditch bank. I saw more plants at another culvert further along the ditch. Again, I could see no spores. On March 5, 1995, I saw another large accumulation of this Azolla species floating at the end of a deep ditch at another section of the same cranberry field about 2.5 km further west. All were dead plants. This time I could see a yellowish-white powder scattered over the surface of the debris. These turned out to be microspores which I collected and examined under the microscope. The glochidia were all without crosswalls. The species I found fits the description of Azolla caroliniana Willd., and eastern North American species known in Canada only from 1962 collection from Hamilton Beach, Ontario which is now assumed extirpated (Cody & Britton, 1989). The three areas where I found this plant contained many other species native to eastern North America, probably introduced with cranberry stock from long ago. The voucher specimens are deposited in the UBC herbarium: "Richmond, near River Rd. E of No 8 Rd. In slough along CN tracks running along edges of cranberry bog. January 2, 1995. Coll. Frank Lomer." References: Brunton, D.F. 1986. Status of mosquito fern, Azolla mexicana Salviniaceae in Canada. Canad. Field-Naturalist 100: 404- 408. Cody, W.J. & D.M. Britton. 1989. Ferns and fern allies of Canada. Research Branch, Agriculture Canada. 430 p. Goward, T. 1994. Mosquito fern: Two new records in British Columbia. Cordillera 1(2): 23-25. CALL FOR SLIDES OF BRITISH COLUMBIA & ALASKA PLANTS From: Deb Sholly, US Forest Service, Ketchikan, AK (Phone: 907- 225-3101) We are looking for slides of the following plants: Draba borealis var. maxima Platanthera gacilis Draba kamtschatica Puccinellia glabra Draba kananaskis Puccinellia kamtschatica Hymenophyllum wrightii Senecio moresbiensis Isoetes truncata Stellaria ruscifolia Ligusticum calderi spp. aleutica I would like to know what photos are coming, so would appreciate a phone call. You can send them to: Deb Sholly, Ecology, US Forest Service, Federal Building, Ketchikan, Alaska 99901. - Thanks! COLEANTHUS SUBTILIS ALERT From: Adolf Ceska I visited Shuswap Lake last weekend and to my surprise found large stands of moss grass (Coleanthus subtilis) in full bloom. It looks like the most ideal time to look for this grass along the mud flats of those lakes and rivers that are fed by water from glaciers and mountain snow. In the fall of 1989 we (my wife Oluna, Bryce Bancroft and I) found Coleanthus subtilis along Shuswap Lake; this was a new for British Columbia and Canada. Previous collections from North America were from Oregon and Washington: Sauvie Island near Portland, muddy shore of Hayden Island at base to I5 bridge, and Bingen. In 1989 we tried to find Coleanthus on Sauvie Island, but we found only a few plants on Oak Island, at the N end of a slough where the road to a boat ramp crosses the dyke. Coleanthus subtilis is an annual grass and it flowers late in fall, and evidently also early in spring. Due to its small size and short time span when it can be found, Coleanthus has been rarely collected. Now it is time to look for it! I would be interested in learning more about the distribution of this plant in the Pacific Northwest. If you find it (and I am sure that you will if you try), make a collection and write me the location. Thanks. A CENTURY OF BEN From: R.T. Ogilvie The hundredth issue of Botanical Electronic News should not pass without some comment. In Botany there are various plant cen- turies, some pertinent to our purpose, others that are not. The genus Centaurea (Asteraceae) has nothing to do with one hundred. The name comes from the Greek kentron - a spur, not centum - a hundred. Centaurea includes notorious species such as the noxious knapweeds, star-thistle, etc. The name of these plants comes from Chiron the Centaur, half-man and half-horse who, according to myth, taught the medicinal herbs to the an- cient Greek medical-botanists such as Asclepias. Various species of Centaurea have been used as herbal tonic, stimulant, diuretic, diaphoretic, purgative, vermifuge, and goodness knows what else. Another genus Centaurium (Gentianaceae) has several species, called Centaury, which have been used as herbal and medicinal tonics. This genus is also named for Chiron the Centaur. The Century Plant - Agave americana, got its name from the belief that it flowered only once in a hundred years. In fact it flowers more frequently than that, but at least the name has something to do with a hundred. Lastly, a Century of Plants, is a set of 100 dried, pressed, and labelled plants specimens, distributed to herbaria. As a UBC student I recall Dr. Krajina assembling bundles of "Centuria" for exchange with other herbaria. Also, Bernard Boivin, another classical botanist, issued sets of "Centurie de plantes" for exchange in the early 1950's. So finally we're back to a Century of BEN, and Adolf Ceska should be congratulated on achieving this. We hope BEN continues for at least another hundred issues. RE: BEN CENTURY - REPLY TO R.T. OGILVIE Thank you, Bob, for your note and thanks to all of you who contributed to BEN and made its century possible. At this moment BEN has about 470 direct subscribers and is also posted on USENET in bionet.plants. I rarely hear from the readers, mostly only when I do something wrong. For instance: BEN # 98: " Any superficial disparities can only be detected when the spores of the truffle -- which can range in size from a pea to an orange -- are examined under a microscope." > Adolf, > WE were amazed at truffle spores the size of an orange. > This is surely a record. The truffle that produces them > must be immense. > Wilf [Schofield] & Olivia [Lee] [UBC Herbarium] Please, don't write me notes saying that you read BEN and enjoy or hate it. Instead, I would greatly appreciate any notes, articles or news that you would like to post on BEN. It is you, BEN readers and BEN contributors, who can keep BEN running. WILDFLOWERS HOME PAGE From: garylipe@onramp.net I have started a WILDFLOWERS home page which might be of inter- est to your subscribers of BEN. Their input to WILDFLOWERS would certainly make the page more useful and meaningful to the readers. Thanks for your consideration. Gary Lipe, garylipe@onramp.net PO BOX 11830, Ft Worth, TX 76110-1830 Visit the WILDFLOWERS page at: http://rampages.onramp.net/~garylipe/