Cosmos sulphureus Cav.

• Authority

  Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

• Family

  Asteraceae

• Scientific Name

  Cosmos sulphureus Cav.

• Description

  Species Description - Much like no. 1 [Cosmos bipinnatus Cav.]; ultimate lf-segments broadly linear to lanceolate, mostly (1.5–)2 mm wide or more; rays intensely orange-yellow or orange-red, 2–3 cm; achenes 15–30 mm; 2n=24. Native of trop. Amer., cult. and casually escaped toward the s. part of our range, and n. to Pa. Aug.–Oct.

• Common Names

  orange cosmos