Chloris virgata |
Chloris radiata |
|
---|---|---|
feather finger grass, feather windmill-grass, showy chloris |
fingergrass, radiate fingergrass, radiate windmill-grass |
|
Habit | Plants annual; usually tufted, occasionally stoloniferous. | Plants annual; with dense fibrous root growth, not stoloniferous. |
Culms | 10-100+ cm. |
30-60 cm, erect or decumbent, occasionally rooting at the lower nodes. |
Sheaths | usually glabrous; ligules to 4 mm, erose or ciliate; blades to 30 cm long, to 15 mm wide, basal hairs to 4 mm, otherwise usually glabrous, occasionally pilose. |
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 | digitate, with 4-20, evidently distinct branches; branches 5-10 cm, erect to ascending, averaging 10 spikelets per cm. |
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 | strongly imbricate, with 1 bisexual and 1(2) sterile floret(s). |
with 1 bisexual and 1 sterile floret. |
Lower glumes | 1.5-2.5 mm; upper glumes 2.5-4.3 mm; lowest lemmas 2.5-4.2 mm, keels usually prominently gibbous, glabrous, or conspicuously pilose, sides not grooved, margins glabrous, scabrous or pilose basally, with conspicuously longer hairs distally, hairs longer than 1.5 mm, lemma apices not conspicuously bilobed, awned, awns 2.5-15 mm; second florets 1.4-2.9 mm long, 0.4-0.8 mm wide, somewhat widened distally, not inflated, bilobed, lobes less than 1/5 as long as the lemmas, awned from the sinuses, awns 3-9.5 mm; third florets greatly reduced, unawned and shorter than the subtending rachilla segment or absent but the rachilla segment present. |
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 | 1.5-2 mm long, about 0.5 mm wide, elliptic. |
1.4-1.5 mm long, 0.3-0.4 mm wide, ellipsoidal. |
2n | = 20, 26, 30, 40. |
= 40. |
Chloris virgata |
Chloris radiata |
|
Distribution |
AL; AR; AZ; CA; CO; FL; GA; IN; KS; KY; LA; MA; MD; ME; MO; MS; NC; ND; NE; NM; NV; NY; OH; OK; PA; SC; TN; TX; UT; HI
|
FL; OR; HI; PR; Virgin Islands |
Discussion | Chloris virgata is a widespread species that grows in many habitats, from tropical to temperate areas with hot summers, including much of the United States. It is a common weed in alfalfa fields of the southwestern United States. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 210. | FNA vol. 25, p. 218. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Chloris | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Chloris |
Sibling taxa | ||
Name authority | Sw. | (L.) Sw. |
Web links |