familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Poeae
genusArctagrostis
speciesArctagrostis latifolia
subspeciesArctagrostis latifolia subsp. latifolia
Arctagrostis latifolia subsp. latifolia
Common names: Polargrass Arctagrostis à larges feuilles
Treatment appears in FNA Volume 24. Treatment on page 678.
Culms (10) 15-50 (95) cm; uppermost nodes usually in the lowest 1/3 of the culm. Uppermost sheaths usually longer than the blades; blades 1-16 cm long, 1.5-9 mm wide. Panicles 2.5-10 (17) cm long, 0.7-3 cm wide; longest branches 0.5-4 (6.5) cm, with 3-15 (40) spikelets per branch; secondary branches usually appressed, spreading in warmer habitats. Spikelets (3) 4-6.5 mm. Glumes subequal; lower glumes 1.8-4.5 mm, 1 (3) -veined; upper glumes 2.3-5.5 mm, usually about 1 mm shorter than the lemmas, (1) 3-veined; lemmas 3-6.5 mm; anthers 1.8-4 mm. 2n = 56.
Discussion
Arctagrostis latifolia subsp. latifolia is the common subspecies from the arctic coast of Alaska to Nunavut, northern Quebec, and northern Greenland.
Selected References
None.
Lower Taxa
None.
"decumbent" is not a number.
... more about "Arctagrostis latifolia subsp. latifolia"
absent +
common +
absent +
bulliform +
absent +
absent +
absent +
straight +
arising +
single +
close +
free +
hard +
thick +
parallel +
not evident +
glabrous +
scabrous +
scabridulous +
spikelike +
developed +
glabrous +
not branching +
annual +
climbing +
floating +
erect +
glabrous +
not woody +
reduced +
capillary +
well-formed +
adjacent +
sometimes longer +
distal +
vestigial +
compressed +
reduced +
usually shorter +
shorter or longer +
subtending +
absent +
subequal +
equal +
uncinate +
punctate +
Present +
contracted +
narrow +
hollow +
absent +
obscure +
absent +
distichous +
3-5-veined +
shorter +
longer +
equaling +
absent +
membranous +
veined +
truncate +
inconspicuous +
glabrous +
lanceolate +
membranous +
1(3)-veined +
simple +
absent +
glabrous +
folded +
well-developed +
absent +
2-keeled +
minute +
diffuse +
spikelike +
reduced +
narrow +
absent +
separating +
thin +
not developed +
absent +
prolonged +
evident +
spreading +
open +
closed +
closed +
ebracteate +
pedicellate +
mixed +
attached +
viviparous +
compressed +
parallel-sided +
Arctagrostis latifolia subsp. latifolia +
Arctagrostis latifolia +
subspecies +
hyaline +
membranous +
(1)3-veined +
glabrous +
scabridulous +
absent +
rhizomatous +
perennial +