Chloris verticillata

Nutt.
Common names: Tumble windmill-grass
Treatment appears in FNA Volume 25. Treatment on page 214.

Plants perennial; cespitose. Culms 14-40 cm, erect or decumbent, sometimes rooting at the lower nodes. Sheaths mostly glabrous, with hairs to 3 mm adjacent to the ligule; ligules 0.7-1.3 mm, shortly ciliate; blades to 15 cm long, 2-3 mm wide, with basal hairs, otherwise glabrous or scabrous. Panicles with 10-16, evidently distinct branches in several well-separate whorls, and a solitary, vertical terminal branch; branches 5-15 cm, spikelet-bearing to the base, with 4-7 spikelets per cm; disarticulation at the uppermost cauline node, panicles falling intact. Spikelets with 1 bisexual and 1 sterile floret. Lower glumes 2-3 mm; upper glumes 2.8-3.5 mm; lowest lemmas 2-3.5 mm long, 1.5-1.9 mm wide, elliptic to lanceolate, keels glabrous or appressed-pubescent, sides not conspicuously grooved, margins glabrous or appressed-pubescent, acute to obtuse, awned, awns 4.8-9 mm; second florets 1.1-2.3 mm, oblong, somewhat inflated, truncate, not or inconspicuously bilobed, lobes less than 1/5 as long as the lemmas, midveins excurrent, forming 3.2-7 mm awns. Caryopses 1.3-1.5 mm long, about 0.5 mm wide, elliptic. 2n = ca. 28, 40, 63.

Distribution

Del., Wyo., N.J., N.Mex., Tex., La., Tenn., N.Y., Pa., Kans., Nebr., Okla., S.Dak., Nev., Va., Colo., Calif., Ark., Ill., Ind., Iowa, Ariz., Conn., Md., Mass., Ohio, Utah, Mo., Mich., S.C., Ky.

Discussion

Chloris verticillata is a common weed of roadsides, lawns, and waste areas in the central United States. Prior to disruption of the native vegetation, it grew in low areas of the central prairies. It also grows in northern Mexico. Chloris verticillata hybridizes with both C. cucullata and C. andropogonoides (see discussion under C. andropogonoides).

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Chloris verticillata"
63 +, 40 +  and 28 +
Mary E. Barkworth +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
0 cm0 mm <br />0 m <br /> (15 cm150 mm <br />0.15 m <br />) +
scabrous +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
2mm;3mm +
spikelike +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
obovoid +, elliptic +  and ovoid +
0.5 cm5 mm <br />0.005 m <br /> (?) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Tumble windmill-grass +
decumbent +  and erect +
14 cm140 mm <br />0.14 m <br /> (40 cm400 mm <br />0.4 m <br />) +
not woody +
Del. +, Wyo. +, N.J. +, N.Mex. +, Tex. +, La. +, Tenn. +, N.Y. +, Pa. +, Kans. +, Nebr. +, Okla. +, S.Dak. +, Nev. +, Va. +, Colo. +, Calif. +, Ark. +, Ill. +, Ind. +, Iowa +, Ariz. +, Conn. +, Md. +, Mass. +, Ohio +, Utah +, Mo. +, Mich. +, S.C. +  and Ky. +
not waisted +
capillary +
bilobed +  and truncate +
sometimes longer +
sterile +  and bisexual +
inflated +  and oblong +
reduced +
1.1mm +  and 2.3mm +
shorter or longer +
subtending +
acute +  and acuminate +
unequal +
uncinate +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
appressed-pubescent +  and glabrous +
not absent +
bilobed +  and entire +
obtuse +  and truncate +
5-veined +, 7-13-veined +  and 1-3-veined +
sometimes longer +
ciliate +  and lacerate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
membranous +
? (?) +  and ? (?) +
inconspicuous +
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 /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
elliptic +  and lanceolate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
appressed-pubescent +  and glabrous +
acute +  and obtuse +
mucronate +
concealed +  and prominent +
2 +  and 1 +
dry +  and fleshy +
spikelike +
sessile +  and pedicellate +
compressed +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Chloris verticillata +
species +
membranous +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
7 +  and 13 +
stoloniferous +  and rhizomatous +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +
well-separate +