Cosmos sulphureus

Summary 4

Cosmos sulphureus is also known as Sulfur Cosmos and Yellow Cosmos. Its native habitat is Central America.

Description 5

Annual herb to c.1.2 m with 4-angled sparsely hispid stems. Leaves: lamina ovate in outline, dissected, with ultimate segments 2-4 mm wide, narrowly oblong and apiculate, glabrous. Capitula c.1.5 cm in diameter (excluding rays). Phyllaries: outer green, acuminate; inner with membranous margins. Receptacular scales c.9 mm. Raysup to 3 cm, c.10, bright orange; apex 3-dentate. Disk florets orange-yellow. Achenes c. 20 mm (including a scabrid beak c.7 mm but excluding the pappus), blackish. Pappus of 2 horizontally spreading setae with retrorsely directed barbs.

Diagnostic 6

Habit: Herb

Sources and Credits

  1. (c) 106611639464075912591, some rights reserved (CC BY-NC-SA), uploaded by 106611639464075912591, https://picasaweb.google.com/106611639464075912591/TampinesEcoPark#5910383346978028146
  2. (c) Ashton Tassin, some rights reserved (CC BY-NC), uploaded by Ashton Tassin
  3. (c) Jenny Smith, some rights reserved (CC BY-NC), uploaded by Jenny Smith
  4. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Cosmos_sulphureus
  5. (c) Mark Hyde, Bart Wursten and Petra Ballings, some rights reserved (CC BY-NC), http://eol.org/data_objects/30290543
  6. (c) India Biodiversity Portal, some rights reserved (CC BY), http://eol.org/data_objects/26079397

More Info