×pseudelymus

Barkworth & D.R. Dewey
Treatment appears in FNA Volume 24. Treatment on page 282.
 TaxonIllustrator 
FNA24 P112 xPseudelymus pg 283.jpeg×pseudelymus saxicoiaCindy Roché

Plants perennial; sometimes rhizomatous. Culms 50-80 cm, erect, glabrous. Leaves not basally concentrated; sheaths glabrous or puberulent; auricles present; ligules truncate. Inflorescences distichous spikes, with 1 (2) spikelet (s) per node. Spikelets appressed, with 3-5 florets. Glumes unequal, linear-lanceolate to lanceolate; lemmas awned or unawned; paleas slightly shorter than to slightly longer than the lemmas; anthers indehiscent.

Distribution

Colo., N.Mex., Calif., Oreg., Wyo., Mont., Utah, Wash., Ariz., Idaho, Nev., S.Dak.

Discussion

×Pseudelymus comprises hybrids between Pseudoroegneria and Elymus. Only one species is treated here. Another species, E. albicans, is thought to be a similar hybrid, but it is treated as a species because it is frequently fertile.

"decumbent" is not a number.

... more about "×pseudelymus"
membranous +  and scarious +
indehiscent +
toothed +, lobed +  and entire +
Mary E. Barkworth +
Barkworth & D.R. Dewey +
1 (?) +  and 3 (?) +
basal +  and apical +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
cross +, linear +  and narrowly lanceolate +
spikelike +
hairy +  and glabrous +
not branching +
50 cm500 mm <br />0.5 m <br /> (80 cm800 mm <br />0.8 m <br />) +
not woody +
Colo. +, N.Mex. +, Calif. +, Oreg. +, Wyo. +, Mont. +, Utah +, Wash. +, Ariz. +, Idaho +, Nev. +  and S.Dak. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
3 +  and 5 +
laterally compressed +  and terete +
shorter than to longer than the adjacent florets +
subtending +
linear-lanceolate +  and lanceolate +
unequal +
uncinate +
solid +  and hollow +
unawned +  and awned +
keeled +, lanceolate +  and rectangular +
stiffly membranous +  and coriaceous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
concealed +  and prominent +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
slightly shorter than to slightly longer than the lemmas +
slightly longer +
subequal +
dry +  and fleshy +
spikelike +
dewey1964a +
puberulent +  and glabrous +
subsessile +  and sessile +
bisexual +  and sterile +
terete +  and compressed +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
not papillate +
Gramineae +
×pseudelymus +
Poaceae tribe Triticeae +
membranous +
inconspicuous +
aquatic +  and terrestrial +