Helianthus annuus
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Photo: Mark Hyde
25, Trafalgar Avenue, Sentosa, Harare
Photo: Mark Hyde
25, Trafalgar Avenue, Sentosa, Harare
Photo: Mark Hyde
25, Trafalgar Avenue, Sentosa, Harare
Photo: Mark Hyde
25, Trafalgar Avenue, Sentosa, Harare
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| Synonyms: | |
| Common names: | Sunflower (English) |
| Frequency: | |
| Status: | Introduced |
| Description: |
Robust roughly-hairy annual up to 3(-4) m. Leaves alternate, long-petiolate, broadly lanceolate to ovate, acute or acuminate. Phyllaries ovate or ovate-lanceolate, ciliate. Capitula extremely large, up to 35 cm in diameter; disk florets brownish-purple. Ray-florets yellow. |
| Type location: |
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| Notes: | |
| Derivation of specific name: | annuus: annual |
| Habitat: | |
| Altitude range: (metres) | |
| Flowering time: | |
| Worldwide distribution: | Domesticated from native American stock and cultivated all over the world for its edible oils and seeds. It is occasionally found naturalized along roadsides. |
| FZ divisions: | |
| Growth form(s): | |
| Endemic status: | |
| Red data list status: | |
| Insects associated with this species: | Agonoscelis versicoloratus (Minor pest, feeding on seeds) |
| Spot characters: | Display spot characters for this species |
| Images last updated: | Sunday 4 June 2017 |
| Literature: |
Bailey, L.H. (1949). Manual of Cultivated Plants Revised edition. Macmillan, New York. Page 998. Bandeira, S., Bolnick, D. & Barbosa, F. (2007). Wild Flowers of Southern Mozambique Universidade Eduardo Mondlane, Maputo, Mozambique Pages 211 - 212. Helianthus annuus lenticularis argophyllus (Includes a picture). Beentje, H.J. & Ghazanfar, S.A. (eds.) (2005). Compositae (Part 3) Flora of Tropical East Africa Pages 706 - 707. (Includes a picture). |
Other sources of information about Helianthus annuus:
Our websites:
Flora of Zambia: Helianthus annuusFlora of Zimbabwe: Helianthus annuus
Flora of Zimbabwe: cultivated Helianthus annuus
External websites:
African Plants: A Photo Guide (Senckenberg): Helianthus annuusAfrican Plant Database: Helianthus annuus
BHL (Biodiversity Heritage Library): Helianthus annuus
EOL (Encyclopedia of Life): Helianthus annuus
GBIF (Global Biodiversity Information Facility): Helianthus annuus
Google: Web - Images - Scholar
iNaturalist: Helianthus annuus
IPNI (International Plant Names Index): Helianthus annuus
JSTOR Plant Science: Helianthus annuus
Mansfeld World Database of Agricultural and Horticultural Crops: Helianthus annuus
Plants of the World Online: Helianthus annuus
Tropicos: Helianthus annuus
Wikipedia: Helianthus annuus