Poa sect. Alpinae

(Hegetschw. ex Nyman) Stapf
Treatment appears in FNA Volume 24.

Plants perennial; not rhizomatous, not stoloniferous. Basal branching intravaginal. Culms 10-40 cm, terete. Leaves mostly basal; sheaths closed for 1/2 - 2/7 their length, terete, basal sheaths persistent, bases usually not swollen; blades flat, moderately thick, soft, straight, apices prow-shaped. Panicles 2-6 (8) cm, erect, ovoid to pyramidal, open or loosely contracted at maturity; nodes with 1-2 branches; branches 1-3 (4) cm, ascending to spreading, straight, terete, smooth or very sparsely scabrous, rarely moderately scabrous. Spikelets ovate, laterally compressed, occasionally bulbiferous; florets usually normal, bisexual. Glumes broadly lanceolate to narrowly ovate, shorter than to subequal to the adjacent lemmas, keeled, keels sparsely scabrous; lower glumes 3-veined; calluses terete, glabrous; lemmas broadly lanceolate, keeled, keels and marginal veins short to long-villous, intercostal regions glabrous or sparsely to moderately short-villous; palea keels mostly softly puberulent to short-villous, scabrous distally; anthers 3, 1.3-2.3 mm.

Discussion

Poa sect. Alpinae includes seven species. They are all cespitose perennials with intravaginal branching and broad leaves. One species is circumboreal; the other six are native to Europe.

Selected References

None.

Lower Taxa

"thick" is not a number."decumbent" is not a number.

... more about "Poa sect. Alpinae"
membranous +  and scarious +
puberulent +, hispidulous +, hairy +  and glabrous +
5 cm50 mm <br />0.05 m <br /> (?) +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
scarious-hyaline +
prow--shaped +
Robert J. Soreng +
(Hegetschw. ex Nyman) Stapf +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
keeled +  and rounded +
strigose +  and glabrous +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swollen +
swelling +
straight +
not evident +
involute +, folded +  and flat +
4 cm40 mm <br />0.04 m <br /> (?) +
ascending;spreading +
hispidulous +, glabrous +, smooth or +  and sparsely densely scabrous +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
unbranched +  and hollow +
ascending +  and erect +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
not woody +
Ill. +, Ind. +, Conn. +, N.J. +, N.Y. +, Ga. +, Wash. +, Utah +, Alaska +, Colo. +, Idaho +, N.Mex. +, Nev. +, Maine +, N.H. +, Vt. +, Del. +, D.C +, Wis. +, Iowa +, Mont. +, Oreg. +, Wyo. +, Pacific Islands (Hawaii) +, Md. +, Mass. +, R.I. +, Fla. +, Calif. +, W.Va. +, Tex. +, La. +, N.C. +, N.Dak. +, Nebr. +, Tenn. +, Ala. +, Ark. +, Ariz. +, Kans. +, Ky. +, Mich. +, Minn. +, Mo. +, Miss. +, Ohio +, Okla. +, Pa. +, Puerto Rico +, S.C. +, S.Dak. +, Va. +, Alta. +, B.C. +, Greenland +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, N.W.T. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +  and Yukon +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
2 +  and 8 +
compressed +
reduced +
1-3(5)-veined +
shorter or longer +
subtending +
keeled +, broadly lanceolate +  and narrowly ovate +
subequal +
distributed +
uncinate +
0.1 cm1 mm <br />0.001 m <br /> (?) +
0 +  and 1/6 +
Oval (?) +  and Round (?) +
milky white +  and slightly greenish +
glabrous or +  and sparsely moderately short-villous +
long-villous +
5(7-11)-veined +
hairy +, glabrous +  and chartaceous +
keeled +  and lanceolate +
0.17 cm1.7 mm <br />0.0017 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
membranous +
erose +  and entire +
white +  and milky white or hyaline +
ciliolate +  and smooth +
lacerate +, truncate +  and acuminate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
membranous +
inconspicuous +
lobed +  and lanceolate +
milky white +  and slightly greenish +
glabrous +, scabrous +  and smooth +
concealed +  and prominent +
0 +  and 5 +
2 +  and 1 +
well-developed +
2-keeled +
subequal +
8 cm80 mm <br />0.08 m <br /> (?) +
ovoid +  and pyramidal +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
dry +  and fleshy +
pubescent +, glabrous +, scabrous +  and smooth +
many +, 1 +  and 100 +
compressed +  and ovate +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Poa sect. Alpinae +
Poa subg. Poa +
section +
membranous +
parallel +  and converging +
branching +, not stoloniferous +  and not rhizomatous +
aquatic +  and terrestrial +