Coelorachis rugosa

(Nutt.) Nash
Common names: Wrinkled jointgrass
Endemic
Synonyms: Mnesithsa rugosa Manisuris rugosa
Treatment appears in FNA Volume 25. Treatment on page 688.

Plants cespitose. Culms 60-120 cm, compressed-keeled. Sheaths compressed-keeled; ligules 0.5-1 mm. Rames 3-9.5 cm; rachises distinctly indented adjacent to the sessile spikelets. Sessile spikelets 3-4 mm; lower glumes transversely rugose; upper lemmas and paleas 2-3 mm. Pedicellate spikelets 1-3 mm. Caryopses about 2 mm, broadly ellipsoid. 2n = unknown.

Distribution

Md., N.J., Miss., Tex., La., Del., Ala., N.C., S.C., Va., Ark., Ga., Fla.

Discussion

Coelorachis rugosa is endemic to the southeastern United States. It grows in moist to wet areas in prairies, bogs, and pine woods, especially flatwoods and savannahs.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Coelorachis rugosa"
anatomy +  and kranz +
Charles M. Allen +
(Nutt.) Nash +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
pseudopetiolate +
non-radiate +  and radiate +
well-developed +
pubescent +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
reduced +
spikelike +
2 cm20 mm <br />0.02 m <br /> (?) +
Wrinkled jointgrass +
purple +  and reddish +
compressed-keeled +
60 cm600 mm <br />0.6 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
not woody +
Md. +, N.J. +, Miss. +, Tex. +, La. +, Del. +, Ala. +, N.C. +, S.C. +, Va. +, Ark. +, Ga. +  and Fla. +
capillary +
sometimes longer +
concealing +
compressed +  and terete +
shorter or longer +
subtending +
compressed +  and rounded +
unequal +
uncinate +
bracteate +  and ebracteate +
pedunculate +  and multiple-stalked +
solid +  and hollow +
photosynthetic +
not aromatic +
cauline +  and basal +
coriaceous +
3 cm30 mm <br />0.03 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
membranous +
inconspicuous +
complex +  and simple +
concealed +  and prominent +
sessile-pedicellate +
heterogamous +
dry +  and fleshy +
indented +
pedunculate +
compressed-keeled +
pedicellate +  and sessile +
in triplets +  and paired +
sterile +  and bisexual +
ovate +  and compressed +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Mnesithsa rugosa +  and Manisuris rugosa +
Coelorachis rugosa +
Coelorachis +
species +
membranous +
sessile-pedicellate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +