Chloris radiata

(L.) Sw.
Common names: Radiate windmill-grass
Treatment appears in FNA Volume 25. Treatment on page 218.

Plants annual; with dense fibrous-root growth, not stoloniferous. Culms 30-60 cm, erect or decumbent, occasionally rooting at the lower nodes. Sheaths usually glabrous, occasionally pilose; ligules membranous, shortly ciliate; blades 10-30 cm long, to 10 mm wide, sometimes with long basal hairs, usually pilose elsewhere, occasionally glabrous or scabrous. Panicles with 5-15, evidently distinct branches in 1-2 (3) whorls; branches 4.5-8 cm, spikelet-bearing to the base, with 11-15 spikelets per cm distally. Spikelets with 1 bisexual and 1 sterile floret. Lower glumes 0.7-1.6 mm; upper glumes 2-2.7 mm; lowest lemmas 2.8-3.3 mm long, 0.4-0.6 mm wide, lanceolate to elliptic, sides not conspicuously grooved, mostly glabrous, margins shortly ciliate distally, hairs less than 1 mm, apices awned, awns 6-13 mm; second florets 0.4-0.7 long, about 0.1 mm wide, borne on an equally long or longer rachilla segment, not or inconspicuously bilobed, awned, awns 3-5 mm. Caryopses 1.4-1.5 mm long, 0.3-0.4 mm wide, ellipsoidal. 2n = 40.

Distribution

Puerto Rico, Virgin Islands, Pacific Islands (Hawaii), Fla., Oreg.

Discussion

Chloris radiata is a weedy species of the eastern Caribbean, Central America, and northern South America. It may be native to Florida, but the record from Linton, Oregon, was from a ballast dump. The species is no longer found in Oregon.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Chloris radiata"
Mary E. Barkworth +
(L.) Sw. +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
scabrous +, glabrous +  and pilose +
usually linear +  and lanceolate occasionally ovate +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
spikelike +
4.5 cm45 mm <br />0.045 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
ellipsoidal +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Radiate windmill-grass +
decumbent +  and erect +
30 cm300 mm <br />0.3 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
Puerto Rico +, Virgin Islands +, Pacific Islands (Hawaii) +, Fla. +  and Oreg. +
not waisted +
capillary +
awned +  and bilobed +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
sometimes longer +
sterile +  and bisexual +
terete cylindrical +  and obovoid +
reduced +
shorter or longer +
subtending +
acute +  and acuminate +
unequal +
uncinate +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
not absent +
bilobed +  and entire +
obtuse +  and truncate +
5-veined +, 7-13-veined +  and 1-3-veined +
sometimes longer +
ciliate +  and lacerate +
membranous +
inconspicuous +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
lanceolate +  and elliptic +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
mucronate +
concealed +  and prominent +
2 +  and 1 +
dry +  and fleshy +
spikelike +
pilose +  and glabrous +
sessile +  and pedicellate +
11 +  and 15 +
compressed +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Chloris radiata +
species +
membranous +
0.2 cm2 mm <br />0.002 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
7 (?) +  and 13 (?) +
stoloniferous +  and rhizomatous +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +