Poa laxa subsp. fernaldiana

(Nannf.) Hyl.
Common names: Mount washington bluegrass
Endemic
Synonyms: Poa fernaldiana
Treatment appears in FNA Volume 24. Treatment on page 572.
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Illustrator: Sandy Long

Copyright: Utah State University

Basal branching mainly intravaginal. Blades very thin. Panicles 2-8 cm, lax, loosely contracted, sparse, with 1-3 branches per node; branches flexuous, smooth or infrequently very sparsely scabrous. Glumes lanceolate; calluses of at least some proximal florets sparsely webbed, rarely all glabrous; lemmas with keels short-villous for at least 1/2 their length, lateral-veins glabrous; anthers (0.6) 0.8-1.1 (1.3) mm. 2n = 42.

Discussion

Poa laxa subsp. fernaldiana is native from Newfoundland south to New England.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.No values specified."decumbent" is not a number."/2" is not declared as a valid unit of measurement for this property.

membranous +  and scarious +
puberulent +, hispidulous +, hairy +  and glabrous +
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 />) +
scarious-hyaline +
lacerate +  and obtuse +
Robert J. Soreng +
(Nannf.) Hyl. +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
keeled +  and rounded +
strigose +  and glabrous +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
involute +, folded +  and flat +
hispidulous +, glabrous +, smooth or +  and sparsely densely scabrous +
slender +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
compressed +  and terete +
Mount washington bluegrass +
unbranched +  and hollow +
5 cm50 mm <br />0.05 m <br /> (100 cm1,000 mm <br />1 m <br />) +
ascending +  and erect +
slender +
6 cm60 mm <br />0.06 m <br /> (18 cm180 mm <br />0.18 m <br />) +
not woody +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
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 5 +
compressed +
reduced +
1-3(5)-veined +
shorter or longer +
subtending +
lanceolate +
unequal +
distributed +
uncinate +
0.1 cm1 mm <br />0.001 m <br /> (?) +
0 +  and 1/6 +
Oval (?) +  and Round (?) +
milky white +  and slightly greenish +
short-villous +
1/3 +  and 1/2 +
prominent +  and obscure +
5(7-11)-veined +
hairy +, glabrous +  and chartaceous +
keeled +  and lanceolate +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
membranous +
erose +  and entire +
white +  and milky white or hyaline +
ciliolate +  and smooth +
lacerate +, truncate +  and acute +
0.125 cm1.25 mm <br />0.00125 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
membranous +
inconspicuous +
lobed +  and lanceolate +
0.75mm +  and 1.05mm +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
milky white +  and slightly greenish +
glabrous +, scabrous +  and smooth +
concealed +  and prominent +
0 +  and 5 +
2 +  and 1 +
well-developed +
2-keeled +
subequal +
dense +  and moderately dense +
erect +  and nodding +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
dry +  and fleshy +
not bulbiferous +
1 +  and 15 +
compressed +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
Poa fernaldiana +
Poa laxa subsp. fernaldiana +
Poa laxa +
subspecies +
membranous +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
0.9mm +  and 1.3mm +
parallel +  and converging +
branching +, not rhizomatous +  and not stoloniferous +
aquatic +  and terrestrial +