The genusElymus has been at the centre of taxonomic controversy due in part to the rearrangement of the species in the related genus Agropyron, a genus in the Wheatgrass tribe.
Similar Species: Alaska Wildrye resembles Slender Wheatgrass (Elymus trachycaulus) except that Alaska Wildrye has the widest part of the glumes near the tip and the glume veins are smooth, whereas Slender Wheatgrass has the widest part of the glume near the middle, and the glume veins are rough.
Blue Wildrye (Elymus glaucus), resembles Canada Wildrye in that it has more than one spikelet per node, but they differ in that the spikelets of Blue Wildrye are narrower than those of Canada Wildrye.
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A good justification for acceptance of Pseudoroegneria as a separate genus is that it probably represents one of the different diploid genomes that have partaken, together with genome(s) from other genera, in the uniformly polyploid (mostly tetraploid) genusElymus.
S Elymus auct., non L. Comments: (1) With at most four species, three in one section, the sections given in Tzvelev's draft are omitted.
Comments: (1) The separation of L. mollis and L. arenarius at species level is probably well justified on a combination of morphological and ploidal differences, even if the morphological differences are few and all the hairiness characters may be genetically interconnected.
: Elymus is interpreted here as comprising primarily caespitose, short-anthered species with non-disarticulating rachises, and lanceolate, somewhat flexible, glumes and their genetically close relatives.
Other genomes known to occur in Elymus are the P and E genome
latiglume (Scribner and J.G. Sm.) Pease and A.H. Moore; Elymus trachycaulus var.
Barkworth and Dewey [12] realigned Sitanion hystrix (Nuttall) J. Smith in the Elymusgenus as Elymus elymoides.
Realignment of the Elymusgenus is based upon morphological and genomic characters [12,56].
Lower elevation populations (that is, cold desert, salt desert habitats) usually mature early June with higher elevation populations (that is, mountain brush, mountain meadows) reaching maturity in late July [18].
Exotic annual oat versus native perennial grass experiment An exotic annual, Avena fatua, was grown from seed in separate pots from a native perennial, Elymus glaucus, in standard commercial potting mix in the teaching greenhouse.
Once the 4-leaf stage was reached for both species, equal leaf areas were cut from the plants and placed on top of moist filter paper in twenty-five petri dishes with a three-inch diameter.
RESULTS Native bunchgrass species preference experiment A trend was shown over three days for Elymus multisetus to increase in aphid numbers, and for Nassella pulchra and Elymus glaucus to both decrease in numbers (Figure 1).
Extensive collections were made of many species of Elymus, which from the basis of the Agafonov's research and are of taxonomic interest to us.
A rare and endangered species of Elymus, originally from Kemerovo Region east of Novosibirsk, was obtained from the field plots.
This species has the characteristics of the hypothetical donor of the Y genome, which is found in many species of Elymus.
www.usu.edu /forage/sib89.htm (1934 words)
Elymus(Site not responding. Last check: 2007-11-07)
Elymus n : tall tufted perennial grasses (such as lyme grass or wild rye) [syn: genusElymus]
Winterhardiness and agronomic performance of wildryes (Elymus species) compared with other grasses in Alaska, and respon...
Chromsome behavior, fertility, and genetic segregation in synthetic allopolyploids between Elymus glaucus and Sitanion
dictionaries.cc /Elymus (65 words)
Craig's Juicy Native Grass Gossip & Research No. 1(Site not responding. Last check: 2007-11-07)
Dry weather in spring 1994 throughout the West caused many wild populations of native grasses to not set seed, or seed quality was very poor.
Seed was collected from at least six individuals per population separated by a minimum of 15 feet, but representing the same habitat and environmental conditions.
Genetic differences were greater in an east-west directions than in a north-south perhaps due to coast vs inland climatic trends and mountain to valley impediment to gene flow.
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Roegneria Koch (1848) should be referred to Elymus Linnaeus (1753) by the priority of International Code and their many common characters, i.e.
Elymus molliusculus L. Cai is very similar to this species by its height, range of leaf blade, spike, spikelets and lemmas.
The combination name of Elymus breviaristatus by P. Keng (July, 1984) is earier than the same name, E. breviaristatus (Hitchcock) A. Love (based on Agropyron breviaristatum Hitchcock) by A. Love (Oct. 1984) and the name of Elymus brachyaristatus A. Love (Oct. 1984).
Squirrel-Tail Grass (Elymus elymoides), formerly named Sitanion hystrix is an attractive grass native to the mountains and plains of the western United States.
Although this tufted perennial makes an attractive, drought-resistant landscaping plant along walkways and roads, it is becoming a widespread weed in disturbed areas of San Diego County.
Another species, called squirrel-tail grass (Elymus elymoides), resembles a weedy introduced grass, but it is actually a native perennial of dry, rocky mountains and open land in the western United States.
