familyPoaceae
subfamilyPoaceae subfam. Pooideae
genusElymus
speciesElymus alaskanus
subspeciesElymus alaskanus subsp. alaskanus
Elymus alaskanus subsp. alaskanus
Common names: Alaskan wheatgrass
Endemic
Synonyms: Agropyron boreale subsp. alaskanum
Treatment appears in FNA Volume 24. Treatment on page 326.
Plants cespitose or shortly rhizomatous. Culms 25-90 cm, sometimes decumbent; nodes often exposed, glabrous or pubescent. Ligules 0.2-0.6 mm; blades 3-7 mm wide. Spikes 3.5-14 cm; internodes scabrous on the edges. Glumes glabrous, scabrous or sparsely hairy, hairs to about 0.2 mm; lemmas glabrous or hairy, sometimes more densely hairy distally, hairs about 0.2 mm, apices unawned or awned, awns to 7 mm, straight.
Discussion
Elymus alaskanus subsp. alaskanus grows on river banks and hillsides, primarily north of 50° N latitude.
Selected References
None.
Lower Taxa
None.
"decumbent" is not a number.
... more about "Elymus alaskanus subsp. alaskanus"
absent +
common +
absent +
bulliform +
absent +
hairy +
absent +
absent +
0-0.5 mm +
unbranched +
divergent +
straight +
arising +
single +
close +
free +
hard +
thick +
parallel +
not evident +
spikelike +
Alaskan wheatgrass +
not branching +
annual +
climbing +
floating +
decumbent +
glabrous +
not woody +
sterile +
reduced +
1/3 +
capillary +
adjacent +
longer +
bisexual +
(0)1-7-veined +
purplish +
shorter than to longer than the adjacent florets +
subtending +
absent +
equal +
uncinate +
0.2 cm2 mm <br />0.002 m <br /> (?) +
alike +
punctate +
Present +
compound +
1.5 cm15 mm <br />0.015 m <br /> (?) +
absent +
glabrous +
scabrous +
absent +
distributed +
concentrated +
5(7)-veined +
adjacent +
shorter +
longer +
scabridulous +
linear-lanceolate +
absent +
ciliolate +
membranous +
veined +
truncate +
inconspicuous +
lanceolate +
glumelike +
functional +
sterile +
widest +
simple +
exposed +
absent +
well-developed +
shorter +
slightly longer +
absent +
keeled +
subequal +
absent +
absent +
0-4 mm +
separating +
thin +
absent +
spikelike +
prolonged +
hispidulous +
evident +
open +
closed +
open +
Endemic +
ebracteate +
divergent +
attached +
appressed +
distinct +
2-5 times longer than +
parallel-sided +
not papillate +
Elymus alaskanus subsp. alaskanus +
Elymus alaskanus +
subspecies +
hyaline +
membranous +
ribbed +
spaced +
absent +
inconspicuous +
rhizomatous +
perennial +