Cosmos parviflorus

(Jacquin) Persoon

Syn. Pl. 2: 477. 1807.

Basionym: Coreopsis parviflora Jacquin Pl. Hort. Schoenbr. 3: 65, plate 374. 1798
Treatment appears in FNA Volume 21. Treatment on page 205. Mentioned on page 203.

Plants 30–90 cm, glabrous or sparsely pubescent. Leaves: petioles ca. 0.5 cm; blades 2.5–6.5 cm, ultimate lobes to 1 mm wide, margins usually spinulose-ciliate, apices acute to obtuse. Peduncles 10–30 cm. Calyculi of spreading to reflexed, linear-oblong to narrowly lanceolate bractlets 6–9 mm, apices acute. Involucres (3–) 5–10 (–15) mm diam. Phyllaries erect, oblong, 5–8 mm, apices acute. Ray corollas white to rose-pink or violet, laminae cuneate-obovate, 5–9 mm, apices dentate. Disc corollas 4–5 mm. Cypselae 9–16 mm, setulose; pappi of 2–4 erect awns 2–3 mm. 2n = 24.


Phenology: Flowering summer–fall.
Habitat: Open or forested slopes and canyons, sometimes in disturbed and cultivated areas
Elevation: 100–3000 m

Distribution

V21-503-distribution-map.gif

Ariz., Colo., Md., Mass., Mo., N.Mex., R.I., Tex., Mexico

Discussion

Within the flora area, Cosmos parviflorus is native only in the southwestern United States.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Cosmos parviflorus"
not tailed +, rounded +  and obtuse +
dark +  and pale +
connate +  and distinct +
acute;acute;acute;obtuse +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Robert W. Kiger +
(Jacquin) Persoon +
smooth +  and ciliate or barbed +
2 +  and 4 +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
decurrent +
Coreopsis parviflora +
compound +  and simple +
2.5 cm25 mm <br />0.025 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
less linear;subulate +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
barbellulate +  and barbellate +
yellow +, white +  and pink or purple or yellow +
fusiform +  and quadrangular-cylindric +
fertile +  and bisexual +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
fertile +  and bisexual +
Ariz. +, Colo. +, Md. +, Mass. +, Mo. +, N.Mex. +, R.I. +, Tex. +  and Mexico +
100–3000 m +
setose +, hispid +, glabrous +, puberulent +  and glabrate +
papillate +  and scabridulous +
linear-fusiform;4-angled;ovate;orbiculate;oblong;linear;cuneate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open or forested slopes and canyons, sometimes in disturbed and cultivated areas +
discoid +  and radiate +
in corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
subhemispheric;hemispheric +
cuneate-obovate +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
sessile +  and petiolate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
concave-convex;flat;linear +
persistent +
of 1-2 , smooth to ciliate or barbed awns or scales +  and coroniform +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (?) +
Flowering summer–fall. +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
sterile +  and fertile +
white +  and rose-pink or violet +
bearing subulate enations +, hairy +  and bristly +
mostly flat;convex +
exalbuminous +
ascending +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Coreopsideae +  and Undefined (tribe Undefined) subtribe Petrobiinae +
Cosmos parviflorus +
species +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
toothed +  and entire +
30 cm300 mm <br />0.3 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
pubescent +  and glabrous +