Poa stenantha var. stenantha

Treatment appears in FNA Volume 24. Treatment on page 594.
Please click on the illustration for a higher resolution version.
Illustrator: Sandy Long

Copyright: Utah State University

Spikelets not bulbiferous; florets normal. Anthers 1.2-2 mm.

Discussion

Poa stenantha var. stenantha can be difficult to separate from P. secunda subsp. secunda (p. 588). Its main distinguishing features are its strongly keeled lemmas with glabrous intercostal regions, and, when present, callus hairs longer than 0.2 mm. Plants with large panicles and glabrous calluses have been called P. macroclada Rydb. Such plants grow infrequently in the U.S. Rocky Mountain portion of the species' range. They intergrade with the more compact typical form.

Selected References

None.

Lower Taxa

None.

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

86 +, 84 +, [81 +  and 42 +
membranous +  and scarious +
puberulent +, hispidulous +, hairy +  and glabrous +
5 cm50 mm <br />0.05 m <br /> (?) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
scarious-hyaline +
acute +  and prow--shaped +
Robert J. 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 +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
ascending;spreading +
hispidulous +, glabrous +, smooth or +  and sparsely densely scabrous +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
compressed +  and terete +
folded +  and flat +
unbranched +  and hollow +
ascending +  and erect +
compressed +, terete +  and capillary +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
Colo. +, Wash. +, Utah +, Alta. +, B.C. +, Oreg. +, Mont. +, Idaho +  and Alaska +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
3 +  and 4 +
compressed +
reduced +
1-3(5)-veined +
shorter or longer +
subtending +
obtuse +  and acute +
subequal +
distributed +
uncinate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0 +  and 1/6 +
Oval (?) +  and Round (?) +
milky white +  and slightly greenish +
puberulent +, glabrous +  and hispidulous +
indistinct +
5(7-11)-veined +
hairy +  and glabrous +
keeled +, compressed +  and lanceolate +
subequal +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
membranous +
erose +  and entire +
milky white +
ciliolate +  and smooth +
acute +  and acuminate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
membranous +
inconspicuous +
lobed +  and lanceolate +
milky white +  and slightly greenish +
concealed +  and prominent +
0 +  and 5 +
2 +  and 1 +
well-developed +
2-keeled +
subequal +
25 cm250 mm <br />0.25 m <br /> (?) +
pyramidal +, narrowly lanceoloid +  and ovoid +
5 cm50 mm <br />0.05 m <br /> (18 cm180 mm <br />0.18 m <br />) +
dry +  and fleshy +
pubescent +, glabrous +, scabrous +  and smooth +
not bulbiferous +
3 +  and 10 +
compressed +, lanceolate +  and narrowly ovate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
Poa macroclada +
Poa stenantha var. stenantha +
Poa stenantha +
variety +
membranous +
0.41 cm4.1 mm <br />0.0041 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
parallel +  and converging +
branching +, not rhizomatous +  and not stoloniferous +
aquatic +  and terrestrial +
not +  and glaucous +