Cenchrus myosuroides

Kunth
Common names: Big sandbur
Treatment appears in FNA Volume 25. Treatment on page 534.

Plants perennial. Culms 5-200 cm, stout, glaucous. Sheaths from shorter than to equaling the internodes; ligules 1.5-2 (3.4) mm; blades 12-40 cm long, 4-13 mm wide, glabrous or sparsely pilose adaxially. Panicles 4-23 cm; fascicles 3.8-8 mm long, 1.2-2.6 mm wide, composed of several whorls of bristles, not burlike; bristles 3-5.8 mm long, 0.2-0.6 mm wide, fused only at the base, not forming a cupule, terete, increasing in size inwards, inner bristles pubescent on the lower 1/2 - 2/3. Spikelets 1 (2-3) per fascicle, 3.8-4.8 (5.6) mm. Lower glumes 1.5-3 mm; upper glumes 3-5 mm, 3-5-veined; lower lemmas 3-5.5 mm; upper lemmas 3.8-5.4 mm; anthers 0.8-2.2 mm. Caryopses 1.5-2.6 mm long, 1-1.5 mm wide, ovoid. 2n = (54), 70.

Distribution

Puerto Rico, Tex., La., Ala., Ga., S.C., Fla.

Discussion

Cenchrus myosuroides is a native species that grows mostly along roadsides and in other waste places. Its native range extends through the Caribbean and Central America to northern South America.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."elongated" is not a number.

... more about "Cenchrus myosuroides"
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
anatomy +  and kranz +
Michael T. Stieber +  and J.K. Wipff +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
12 cm120 mm <br />0.12 m <br /> (40 cm400 mm <br />0.4 m <br />) +
pilose +  and glabrous +
folded +  and flat +
4mm;13mm +
spikelike +
reduced +
0.3 cm3 mm <br />0.003 m <br /> (0.58 cm5.8 mm <br />0.0058 m <br />) +
scabridulous +
not terete +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
not developed +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Big sandbur +
branched +  and solid +
decumbent +  and erect +
geniculate +
5 cm50 mm <br />0.05 m <br /> (200 cm2,000 mm <br />2 m <br />) +
Puerto Rico +, Tex. +, La. +, Ala. +, Ga. +, S.C. +  and Fla. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
membranous +
inconspicuous +
acute +  and acuminate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
purplish +  and tawny +
scabridulous +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
flattened +  and terete +
subterranean +
4 cm40 mm <br />0.04 m <br /> (23 cm230 mm <br />0.23 m <br />) +
dry +  and fleshy +
in triplets +  and paired +
unisexual +  and bisexual +
compressed +  and terete +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Gramineae +
Cenchrus myosuroides +
Cenchrus +
species +
membranous +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
acuminate +  and ovate +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.54 cm5.4 mm <br />0.0054 m <br />) +
acuminate +  and ovate +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +