Limnodea

L.H. Dewey
Treatment appears in FNA Volume 24. Treatment on page 776.
 TaxonIllustrator 
FNA24 P300B Limnodea pg 775.jpegLimnodea arkansana

Plants annual; tufted. Culms to 60 cm, often prostrate and branching at the base, glabrous; internodes solid. Sheaths open or closed, rounded on the back, frequently hispid; auricles absent; ligules membranous, usually lacerate and minutely ciliate; blades flat, mostly ascending, abaxial and/or adaxial surfaces glabrous or hispid. Inflorescences panicles, loosely contracted; branches spikelet-bearing to the base or nearly so, some branches longer than 1 cm; disarticulation below the glumes. Spikelets pedicellate, subterete, with 1 floret; rachillas prolonged beyond the base of the floret as a slender bristle, glabrous. Glumes equal, rigid, coriaceous, hispid or scabrous throughout, rounded over the midvein, veinless or obscurely 3-5-veined, acute, unawned; calluses blunt, glabrous; lemmas equaling the glumes, chartaceous, smooth, veinless or inconspicuously 3-veined, minutely bifid or acute, awned, awns subterminal, exceeding the florets, geniculate near midlength, basal segment twisted; paleas shorter than the lemmas, veinless or the base 2-veined, hyaline; lodicules 2, glabrous, toothed or not; anthers 3; ovaries glabrous. Caryopses about 2.5 mm, shorter than the lemmas, concealed at maturity, linear, x = 7.

Distribution

Okla., Tex., La., Ala., Ark., Miss., S.C., Fla.

Discussion

Limnodea is a monotypic genus of the southern United States and adjacent Mexico.

Lower Taxa

"decumbent" is not a number.

... more about "Limnodea"
membranous +  and scarious +
hispid +  and glabrous +
Neil Snow +
L.H. Dewey +
1 (?) +  and 3 (?) +
straight +
subterminal +
geniculate +
keeled +  and rounded +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
cross +, linear +  and narrowly lanceolate +
spikelike +
1 cm10 mm <br />0.01 m <br /> (?) +
ascending +  and erect +
0 cm0 mm <br />0 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
Okla. +, Tex. +, La. +, Ala. +, Ark. +, Miss. +, S.C. +  and Fla. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
sterile +  and bisexual +
compressed +
reduced +
3-5-veined +  and veinless +
shorter or longer +
subtending +
scabrous +  and hispid +
acute +  and rounded +
unequal +
coriaceous +  and rigid +
equaling +  and equal +
uncinate +
3-veined +, veinless +  and smooth +
acute +  and bifid +
lacerate +
membranous +
inconspicuous +
not +  and toothed +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
spikelike +
dry +  and fleshy +
brandenburg2000b +
1 +  and 60 +
subterete +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Limnodea +
Poaceae tribe Poeae +
membranous +
parallel +  and converging +
stoloniferous +  and rhizomatous +
aquatic +  and terrestrial +