Muhlenbergia glomerata

(Willd.) Trin.
Common names: Spike muhly Muhlenbergie agglomeree
Synonyms: Muhlenbergia racemosa var. cinnoides Muhlenbergia glomerata var. cinnoides
Treatment appears in FNA Volume 25. Treatment on page 154.

Plants perennial; rhizomatous, not cespitose. Culms 30-120 cm tall, 0.8-2.5 mm thick, erect, seldom branched above the base; internodes dull, mostly puberulent (sometimes sparsely so), terete, rarely keeled, strigose immediately below the nodes. Sheaths scabridulous, slightly keeled; ligules 0.2-0.6 mm, membranous, truncate, lacerate-ciliolate; blades 2-15 cm long, 2-6 mm wide, flat, usually scabrous or scabridulous, occasionally smooth. Panicles 1.5-12 cm long, 0.3-1.8 cm wide, lobed, dense; primary branches 0.2-2.5 cm, appressed; pedicels absent or to 1 mm, strigose. Spikelets 3-8 mm. Glumes subequal, 3-8 mm (including the awn), about 1.3-2 times longer than the lemmas, smooth or scabridulous distally, 1-veined, acuminate, awned, awns to 5 mm; lemmas 1.9-3.1 mm, lanceolate, pubescent on the calluses, midveins, and margins, hairs to 1.2 mm, apices scabridulous, acuminate, unawned or awned, awns to 1 mm; paleas 1.9-3.1 mm, lanceolate, loosely pilose between the veins, apices acuminate; anthers 0.8-1.5 mm, yellowish. Caryopses 1-1.6 mm, fusiform, brown. 2n = 20.

Distribution

Minn., Wash., D.C., Wis., W.Va., Conn., Mass., Maine, N.H., R.I., Vt., Wyo., N.J., N.C., N.Y., Pa., Nev., Va., Colo., Alta., B.C., Man., N.B., Nfld. and Labr. (Labr.), N.S., N.W.T., Ont., P.E.I., Que., Sask., Yukon, Ill., Ind., Iowa, Idaho, Md., Ohio, Utah, N.Dak., Nebr., Mich., Mont., Ky., Oreg., S.Dak.

Discussion

Muhlenbergia glomerata grows in meadows, marshes, bogs, alkaline fens, lake margins, stream banks, beside irrigation ditches and hot springs, and on gravelly slopes, in many different plant communities, at elevations of 30-2300 m. It is most common in southern Canada and the northeastern United States, but grows sporadically throughout the western United States. It is not known from Mexico.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Muhlenbergia glomerata"
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
scabridulous +
Paul M. Peterson +
(Willd.) Trin. +
1 (?) +  and 3 (?) +
sinuous +, flexuous +  and straight +
multiple +, , +  and single +
curled +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
pubescent +  and glabrous +
scabridulous +  and scabrous +
involute +, folded +  and flat +
2mm;6mm +
spikelike +
with hairs +  and glabrous +
0.1 cm1 mm <br />0.001 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Spike muhly +  and Muhlenbergie agglomeree +
30 cm300 mm <br />0.3 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
geniculate +
2 cm20 mm <br />0.02 m <br /> (300 cm3,000 mm <br />3 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Minn. +, Wash. +, D.C. +, Wis. +, W.Va. +, Conn. +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Wyo. +, N.J. +, N.C. +, N.Y. +, Pa. +, Nev. +, Va. +, Colo. +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. (Labr.) +, N.S. +, N.W.T. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Ill. +, Ind. +, Iowa +, Idaho +, Md. +, Ohio +, Utah +, N.Dak. +, Nebr. +, Mich. +, Mont. +, Ky. +, Oreg. +  and S.Dak. +
not waisted +
capillary +
pistillate +  and staminate +
bisexual +  and fertile +
round +  and compressed +
reduced +
1.3-2 times longer than +
subtending +
scabridulous +  and smooth +
acuminate +
subequal +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
uncinate +
0 cm0 mm <br />0 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
strigose +  and puberulent +
keeled +  and terete +
not absent +
lanceolate +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
lacerate-ciliolate +
acuminate +  and truncate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
membranous +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
lanceolate +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
1.5cm +  and 12cm +
cleistogamous +
0.3 cm3 mm <br />0.003 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
dry +  and fleshy +
0.2 cm2 mm <br />0.002 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
spikelike +
scabridulous +
1 +  and 60 +
compressed +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Muhlenbergia racemosa var. cinnoides +  and Muhlenbergia glomerata var. cinnoides +
Muhlenbergia glomerata +
Muhlenbergia +
species +
membranous +
shorter than to longer than the florets +
7 +  and 13 +
plant +  and not cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +