Cosmos sulphureus

Cavanilles

Icon. 1: 56, plate 79. 1791.

Introduced
Treatment appears in FNA Volume 21. Treatment on page 205. Mentioned on page 203.

Plants 30–200 cm, glabrous or sparsely pilose to hispid. Leaves: petioles 1–7 cm; blades 5–12(–25) cm, ultimate lobes 2–5 mm wide, margins sparsely spinulose-ciliate, apices apiculate. Peduncles 10–20 cm. Calyculi of spreading-ascending, linear-subulate bractlets 5–7(–10) mm, apices acute; Involucres 6–10 mm diam. Phyllaries erect, oblong-lanceolate, 9–13(–18) mm, apices acute to rounded-obtuse. Ray corollas intensely yellow to red-orange, laminae obovate, 18–30 mm, apices ± truncate, denticulate. Disc corollas 6–7 mm. Cypselae 15–30 mm, usually hispidulous, rarely glabrous; pappi 0, or of 2–3 widely divergent awns 1–7 mm. 2n = 24, 48.


Phenology: Flowering summer–fall.
Habitat: Disturbed sites
Elevation: 0–1000 m

Distribution

V21-504-distribution-map.gif

Introduced; Ala., Ark., Calif., Conn., Del., Fla., Ga., Ill., La., Md., Mich., Mo., N.Y., N.C., Okla., Pa., S.C., Tenn., Tex., Va., Mexico, also introduced in West Indies, Central America, South America, Asia, Africa, Pacific Islands.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Cosmos sulphureus"
Robert W. Kiger +
Cavanilles +
Ala. +, Ark. +, Calif. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, La. +, Md. +, Mich. +, Mo. +, N.Y. +, N.C. +, Okla. +, Pa. +, S.C. +, Tenn. +, Tex. +, Va. +, Mexico +, also introduced in West Indies +, Central America +, South America +, Asia +, Africa +  and Pacific Islands. +
0–1000 m +
Disturbed sites +
Flowering summer–fall. +
Introduced +
Undefined (tribe Undefined) subtribe Coreopsideae +  and Undefined (tribe Undefined) subtribe Petrobiinae +
Cosmos sulphureus +
species +