Muhlenbergia uniflora

(Muhl.) Fernald
Common names: Bog muhly Muhlenbergie uniflore
Treatment appears in FNA Volume 25. Treatment on page 181.

Plants perennial; loosely matted. Culms 5-45 cm, arising from the bases of old depressed culms, compressed-keeled, developing branches below the lower leaf nodes; internodes mostly glabrous, sometimes minutely puberulent below the nodes. Sheaths longer than the internodes, keeled, keels scabridulous, not becoming papery or spirally coiled when old; ligules 0.5-1.5 mm, membranous, truncate to obtuse, erose, without lateral lobes; blades 1-15 cm long, 0.8-2 mm wide, flat to conduplicate, smooth or scabridulous abaxially, hirtellous adaxially, midveins thickened and whitish proximally. Panicles 2-20 cm long, (0.2) 2.5-6 cm wide, diffuse; primary branches 0.4-6 cm long, about 0.1 mm thick, ascending, diverging 10-60° from the rachises, naked basally; pedicels 0.2-7 mm, glabrous. Spikelets 1.3-2.1 mm, dark purplish to plumbeous, occasionally with 2 florets. Glumes equal, 0.4-1.3 mm, glabrous, 1-veined, apices scabrous, acute to obtuse, sometimes erose or notched, unawned; lemmas 1.2-2 mm, oblongelliptic, dark purplish to plumbeous, glabrous, faintly 3-veined, apices acute to obtuse, unawned; paleas 1.3-2.1 mm, oblongelliptic, glabrous, acute to obtuse; anthers 0.6-0.9 mm, dark purple. Caryopses 0.6-0.8 mm, ovoid, brownish. 2n = 42.

Distribution

Maine, Md., N.J., Conn., N.Y., Mass., N.H., Minn., Mich., Wis., R.I., Pa., Vt., B.C., N.B., Nfld. and Labr., N.S., Ont., Que., Oreg.

Discussion

Muhlenbergia uniflora grows in bogs, wet meadows, and lake shores in sandy or peaty, often acidic, soils, at elevations of 0-650 m. It is native to eastern North America, but was collected once in British Columbia, probably having been introduced from ship ballast, and was recently collected from a commercial cranberry bog in Oregon. The collection from Texas may also be an introduction.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Muhlenbergia uniflora"
dark purple +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
awned +  and entire +
acute +  and obtuse +
Paul M. Peterson +
(Muhl.) Fernald +
1 (?) +  and 3 (?) +
sinuous +, flexuous +  and straight +
multiple +, , +  and single +
curled +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
1 cm10 mm <br />0.01 m <br /> (15 cm150 mm <br />0.15 m <br />) +
scabridulous +  and smooth +
involute +, folded +  and flat +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
spikelike +
with hairs +  and glabrous +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Bog muhly +  and Muhlenbergie uniflore +
depressed +  and compressed-keeled +
5 cm50 mm <br />0.05 m <br /> (45 cm450 mm <br />0.45 m <br />) +
Maine +, Md. +, N.J. +, Conn. +, N.Y. +, Mass. +, N.H. +, Minn. +, Mich. +, Wis. +, R.I. +, Pa. +, Vt. +, B.C. +, N.B. +, Nfld. and Labr. +, N.S. +, Ont. +, Que. +  and Oreg. +
not waisted +
capillary +
pistillate +  and staminate +
bisexual +  and fertile +
round +  and compressed +
reduced +
shorter or longer +
subtending +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
puberulent +  and glabrous +
scabridulous +
not absent +
dark purplish +  and plumbeous +
oblongelliptic +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
truncate +  and obtuse +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
acute +  and obtuse +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
2cm +  and 20cm +
cleistogamous +
spikelike +
2.5 cm25 mm <br />0.025 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
dry +  and fleshy +
0.4 cm4 mm <br />0.004 m <br /> (6 cm60 mm <br />0.06 m <br />) +
diverging;ascending +
0.1 cm1 mm <br />0.001 m <br /> (?) +
spikelike +
dark purplish +  and plumbeous +
1 +  and 60 +
compressed +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Muhlenbergia uniflora +
Muhlenbergia +
species +
membranous +
shorter than to longer than the florets +
7 (?) +  and 13 (?) +
stoloniferous +  and rhizomatous +
plant +  and matted +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +