Poa hartzii subsp. alaskana

Soreng
Treatment appears in FNA Volume 24. Treatment on page 591.
Please click on the illustration for a higher resolution version.
Illustrator: Sandy Long

Copyright: Utah State University

Plants loosely tufted. Culms 20-45 cm. Ligules 5-7 mm. Panicles 7-12 cm; branches smooth or sparsely to moderately scabrous. Spikelets 5-7 mm, not bulbiferous, lustrous; florets normal; rachilla internodes 1.5-2 mm. Upper glumes 5-6 mm; calluses usually with a crown of 1-2 mm hairs; lemmas 5.5-7 mm, sparsely hairy, hairs mostly longer than 0.5 mm, apices acute; anthers 2-2.8 mm. 2n = unknown.

Discussion

Poa hartzii subsp. alaskana grows on the North Slope of Alaska, mainly in sandy places. It generally resembles robust plants of P. hartzii subsp. hartzii, but has a looser habit, longer lemmas, and well-developed anthers.

Selected References

None.

Lower Taxa

None.

"thin" is not a number."decreasing" is not a number.No values specified."decumbent" is not a number.

membranous +  and scarious +
hispidulous +  and glabrous +
5 cm50 mm <br />0.05 m <br /> (?) +
0.2 cm2 mm <br />0.002 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
bronze-colored +
long-scarious +
Robert J. Soreng +
Soreng +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
keeled +  and rounded +
strigose +  and glabrous +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
persisting +
not evident +
involute +, folded +  and flat +
erect;ascending +
hispidulous +, glabrous +, smooth or +  and sparsely densely scabrous +
angled +  and terete +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
with a crown +  and glabrous +
compressed +  and terete +
folded +  and involute +
2 cm20 mm <br />0.02 m <br /> (9 cm90 mm <br />0.09 m <br />) +
unbranched +  and hollow +
ascending +  and erect +
20 cm200 mm <br />0.2 m <br /> (45 cm450 mm <br />0.45 m <br />) +
not woody +
Alaska +, Greenland +, N.W.T. +, Nunavut +  and Que. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
3 +  and 5 +
compressed +
reduced +
1-3(5)-veined +
shorter or longer +
subtending +
lanceolate +  and broadly lanceolate +
unequal +
distributed +
uncinate +
0.5 cm5 mm <br />0.005 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0 +  and 1/6 +
Oval (?) +  and Round (?) +
milky white +  and slightly greenish +
indistinct +
5(7-11)-veined +
keeled +  and lanceolate +
subequal +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
membranous +
erose +  and entire +
white +  and milky white or hyaline +
ciliolate +  and smooth +
lacerate +, truncate +  and acuminate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
membranous +
inconspicuous +
lobed +  and lanceolate +
milky white +  and slightly greenish +
decurrent +
concealed +  and prominent +
0 +  and 5 +
2 +  and 1 +
well-developed +
2-keeled +
subequal +
12 cm120 mm <br />0.12 m <br /> (?) +
ovate +  and lanceolate +
7 cm70 mm <br />0.07 m <br /> (12 cm120 mm <br />0.12 m <br />) +
dry +  and fleshy +
not bulbiferous +
1 +  and 10 +
compressed +  and lanceolate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Poa hartzii subsp. alaskana +
Poa hartzii +
subspecies +
membranous +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
parallel +  and converging +
branching +, stoloniferous +  and not rhizomatous +
aquatic +  and terrestrial +