Home | > | List of cultivated families | > | Asteraceae | > | Cosmos | > | bipinnatus |
Synonyms: |
Bidens formosa (Bonato) Sch. Bip. |
Common names: | Cosmos (English) |
Description: | Annual herb to c.1 m. Leaves: petiole 0 or widened and clasping, to 4 cm; lamina 6-11 × 3-5 cm, ovate in outline, deeply dissected with ultimate segments c. 1 mm wide, linear. Capitula up to c. 2 cm diameter (excluding rays), solitary on terminal and side branches. Phyllaries: outer c. 1 cm, ovate with a long-acuminate apex; inner shorter. Receptacular scales c. 7 mm with a linear appendage, c. 2 mm. Rays up to 4 cm, c. 8, pink, white or lilac; apex 3-dentate. Disk florets yellow. Achenes 7-16 mm, blackish. Pappus of 2-3 forward-pointing setae or 0. |
Notes: | This is the well-known Cosmos, the massed flowers of which create spectacular splashes of colour in late summer. Two colour forms are pictured above. |
Derivation of specific name: | |
Flowering time: | Feb - May |
Worldwide distribution: | Native of Central America and the West Indies. |
Growth form(s): | |
Insects associated with this species: | spilosoma lineata (Larval foodplant) |
Spot characters: | Display spot characters for this species |
Image last updated: | Monday 19 March 2007 |
Literature: |
Baumann, G. (2005). Photographic Guide to Wildflowers of Malawi Wildlife and Environmental Society of Malawi Pages 164 - 165. (Includes a picture). Beentje, H.J. & Ghazanfar, S.A. (eds.) (2005). Compositae (Part 3) Flora of Tropical East Africa Page 808. Chapano, C. & Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 10. Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 146. Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 23. as Bidens formosa Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 29. Wild, H. (1967). The Compositae of the Flora Zambesiaca area. 1. Heliantheae. Kirkia 6(1) Pages 32 - 33. as Bidens formosa |
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