Puccinellia angustata

(R. Br.) E.L. Rand &
Common names: Tall alkali grass Puccinellie étroite
Synonyms: Puccinellia contracta
Treatment appears in FNA Volume 24. Treatment on page 467.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants perennial; cespitose, not mat-forming. Culms 10-35 cm, erect to decumbent. Ligules (0.8) 1-3 (4) mm, acute, obtuse, or truncate, entire; blades usually involute and 0.5-1.2 mm in diameter, sometimes flat and 0.5-3 mm wide. Panicles (4) 5-10 (13) cm, usually contracted, occasionally diffuse at maturity, lower nodes with 2-3 (4) branches, lower branches erect to ascending, spikelets usually confined to the distal 1/2; pedicels scabrous, lacking tumid epidermal-cells. Spikelets 4-10 mm, with 3-5 (6) florets. Glumes rounded over the back, veins obscure, apices acute; lower glumes 1.5-2.8 mm, usually less than 1/2 as long as the adjacent lemmas; upper glumes 2.2-4.2 mm; rachilla internodes slightly and gradually broadened to the point of attachment with the lemmas, at least the lowest internode usually more than 0.09 mm thick; calluses with a few hairs; lemmas 3.5-5.2 mm, herbaceous, often purplish, hairy on the proximal 1/2 along the veins, sometimes also between the veins, backs rounded, 5-veined, veins obscure, not extending to the margins, apical margins hyaline, scabrous, apices acute, entire or erose; palea veins with curly, intertwined hairs proximally, scabrous distally; anthers (0.6) 0.8-1.1 (1.5) mm. 2n = 42.

Distribution

Alta., B.C., Greenland, Man., N.W.T., Nunavut, Que., Sask., Yukon, Alaska

Discussion

Puccinellia angustata is a common and widespread arctic species that grows in disturbed silty or sandy sediments. It is usually non-littoral, but when in coastal areas it grows above the influence of high tide.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Puccinellia angustata"
membranous +  and scarious +
0.6 cm6 mm <br />0.006 m <br /> (?) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
erose +  and entire +
serrate to erose +  and entire +
Jerrold I. Davis +
(R. Br.) E.L. Rand & +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
involute +, folded +  and flat +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
spikelike +
pubescent +  and glabrous +
Tall alkali grass +  and Puccinellie étroite +
not branching +
erect +  and decumbent +
geniculate +
10 cm100 mm <br />0.1 m <br /> (35 cm350 mm <br />0.35 m <br />) +
not woody +
Alta. +, B.C. +, Greenland +, Man. +, N.W.T. +, Nunavut +, Que. +, Sask. +, Yukon +  and Alaska +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
3 +  and 5 +
sterile +  and bisexual +
compressed +
reduced +
usually distinctly shorter +
subtending +
rounded +
subequal +  and unequal +
membranous +
intertwined +
less +  and 1/3 +
(3)5(7)-veined +
keeled +  and rounded +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
membranous +  and slightly or distinctly coriaceous +
erose +  and entire +
entire +  and truncate +
obtuse +  and acute +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
membranous +
inconspicuous +
lanceolate +
erect +  and ascending +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
subequal +
membranous +  and scarious +
4 cm40 mm <br />0.04 m <br /> (?) +
spikelike +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
dry +  and fleshy +
subterete +  and weakly laterally compressed +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Puccinellia contracta +
Puccinellia angustata +
Puccinellia +
species +
membranous +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
plant +, not mat-forming +  and cespitose +
aquatic +  and terrestrial +