From aceska at telus.net Wed Jul 27 19:44:59 2011 From: aceska at telus.net (Adolf Ceska) Date: Wed, 27 Jul 2011 11:44:59 -0700 Subject: [BEN-L]BEN # 440 Message-ID: <005401cc4c8d$49b5c250$dd2146f0$@net> BBBBB EEEEEE NN N ISSN 1188-603X BB B EE NNN N =20 BBBBB EEEEE NN N N BOTANICAL BB B EE NN NN ELECTRONIC BBBBB EEEEEE NN N NEWS No. 440 July 27, 2011 aceska@telus.net Victoria, B.C. ----------------------------------------------------------- Dr. A. Ceska, 1809 Penshurst, Victoria, BC, Canada V8N 2N6 ----------------------------------------------------------- _JUNCUS HEMIENDYTUS_ (JUNCACEAE):=20 A NEW RUSH FOR BRITISH COLUMBIA AND CANADA From: Oldriska Ceska, Curtis Bj=F6rk cjbjork@gmail.com & Adolf Ceska aceska@telus.net=20 Accompanying photographs are in the BEN archives:=20 http://bomi.ou.edu/ben/408/impatiens_figures_408.pdf=20 Several years ago, O. & A. Ceska collected a small rush on Harewood = Plains, near Nanaimo, on Vancouver Island, British Columbia, Canada. They = assumed, without any careful examination, that it was _Juncus kelloggii_ Engelm. = that they knew from its single Canadian site in Uplands Park, Oak Bay, = Victoria. After they posted two photographs of the Harewood Plains plants on = E-Flora (http://www.geog.ubc.ca/biodiversity/eflora/index.shtml ) as _J. = kelloggii_, Curtis Bj=F6rk voiced his suspicion that the plant on the photographs = was misidentified. When they examined the original collection, they had to = agree that the minute rush was in fact Hermann's Dwarf Rush, _Juncus = hemiendytus_ F.J. Herm. Both _Juncus kelloggii_ and _J. hemiendytus_ belong to section = _Caespitosi_ Cout. This is a section of 16 usually-delicate annual species centred in Southern Africa and Western North America. Only a single species of the rushes in this section, _Juncus capitatus_ Weigel, is not confined to = one or both of these two areas (_J. capitatus_ is considered native to Europe = and Southwest Asia and to North and South Africa. It has been introduced to North and South America, Australia, and New Zealand.). Barbara Ertter suggests that this section of delicate rushes includes two or three = possibly unrelated groups of species that evolved independently in two or three different geographical areas (Ertter 1986, 2002). _Juncus hemiendytus_ is characterized by a combination of characters: a single flower on each flowering stem, mostly 4 perianth segments, bicarpellate gynoecium, and smooth seeds. Specimens from Harewood Plains belong to the typical variety, which has perianth segments shorter than = the capsule and the stem not thickened below the flower. The similar _Juncus kelloggii_ usually has more than one flower on the top of the stem, six perianth segments and its seeds have thick longitudinal ridges and fine = wavy crossridges. Specimens of plants collected at Uplands Park in Oak Bay, Victoria, Canada, have the longitudinal ridges on the seed coat and = clearly belong to _J. kelloggii_. In spite of an intensive search, we saw only a single small population = of _Juncus hemiendytus_ covering an area of a few square meters. The plants were growing in a vernal seep on thin, humus-rich soil that had = accumulated on benches of Nanaimo Formation sandstones. _Juncus hemiendytus_ was accompanied by the following species: _Agrostis microphylla_ Steud., _Anthoxanthum odoratum_ L., _Brodiaea coronaria_ (Salisb.) Engl., = _Danthonia californica_ Boland., _Dichanthelium acuminatum_ (Sw.) Gould & C.A. = Clark, _Isoetes nuttallii_ A. Braun ex Engelm., _Juncus articulates_ L., = _Juncus bufonius_ L., _Trifolium variegatum_ var. _major_ Lojac., and _Triteleia hyacinthina_ (Lindl.) Greene. A large population of _Zeltnera = muehlenbergii_ (Griseb.) G. Mans., rare in British Columbia, occurred within 25 m of = this site. This species is locally common in parts of Oregon and California. = _Juncus hemiendytus_ var. _hemiendytus_ covers a lot of ground in south-central Oregon and the Modoc Plateau, growing in all sorts of habitats, = including disturbed sites like clearcuts and jeep tracks. Its range in Washington, = is limited to the Scablands vernal pools in southwest Spokane County, and = near Mt. Adams in Klickitat County. The population in Klickitat County may = be the closest to the BC population, separated by a distance of about 365 = km.=20 Voucher specimen: UBC V234134 =96 _Juncus hemiendytus_ F.J. Herman var. _hemiendytus_ =96 Canada, British Columbia, Vancouver Island, Nanaimo, Harewood Plains. 49.130195=B0 N 123.962947=B0 W; habitat: vernal seeps = with thin soil on Nanaimo Formation sandstone outcrops; elev. 170 m; June 22, = 2005; Coll.: Ceska, O. & Ceska, A. Collection No.: AOC 33,521 Etymology of the species epithet: _hemiendy'tus_: from the Greek = _hemi-_, "half," and _endyton_, "garment, dress," thus "half-dressed" in possible reference to the absence of one (or both) bracts subtending the flower. Cf. http://www.calflora.net/botanicalnames/pageHA-HE.html=20 References Ertter, B. 1986. The _Juncus triformis_ complex. _Memoirs of the New = York Botanical Garden_ 39: 1-90. Ertter, B. 2002. [_Juncus_] 3 Sect. _Caespitosi_. Pp. 57-74 in = Kirschner, J. et al. 2002. _Juncaceae 2: _Juncus_ subg. _Juncus_, Species Plantarum: = Flora of the World_. Part 7: 1-336. For Figures see http://bomi.ou.edu/ben/440/juncus_hemiendytus_illustrations.pdf =20 Fig. 1. _Juncus hemiendytus_, Harewood Plains, Nanaimo, British = Columbia, Canada Fig. 2. Habitat of _Juncus hemiendytus_, Harewood Plains, Nanaimo, = British Columbia, Canada NEW COMPENDIUM OF HYPHOMYCETES GENERA From: http://www.apsnet.org/apsstore/shopapspress/Pages/51854.aspx/=20 Keith Seifert, Gareth Morgan-Jones, Walter Gams, and Bryce Kendrick. = 2011.=20 _The Genera of Hyphomycetes._ American Phytopathological Society Press, St. Paul, MN; 997 pages; 8.5" = x 12" hardcover; Price: US$129. The Genera of Hyphomycetes is the essential reference for the = identification of molds to all those who work with these fungi, including plant pathologists, industrial microbiologists, mycologists and indoor = environment specialists, whether they be professionals or students. The book compiles information on about 1,480 accepted genera of = hyphomycetes and about 1,420 genera that are synonyms or names of uncertain identity. Each accepted genus is described using a standardized set of key words, connections with sexual stages (teleomorphs) and synanamorphs are = listed, along with known substrates or hosts, and continental distribution. When available, accession numbers for representative DNA barcodes are listed = for each genus. A complete bibliography is provided for each genus, giving = the reader access to the literature necessary to identify species. Most = accepted genera are illustrated by newly prepared line drawings, including many genera that have never been comprehensively illustrated before, arranged = as a visual synoptic key. More than 200 color photographs supplement the line drawings. Diagnostic keys are provided for some taxonomic and ecological groups. Appendices include an integrated classification of hyphomycete genera in the phylogenetic fungal system, a list of teleomorph-anamorph connections, = and a glossary of technical terms. With its combination of information on classical morphological taxonomy, molecular phylogeny and DNA = diagnostics, this book is an effective modern resource for researchers working on microfungi. ____________________________________________________________ Subscriptions: http://victoria.tc.ca/mailman/listinfo/ben-l Send submissions to aceska@telus.net BEN is archived at http://www.ou.edu/cas/botany-micro/ben/=20 ____________________________________________________________