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Bidens pilosa
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Photo: Bart Wursten
Ndundu Lodge, Vumba
Photo: Bart Wursten
Ndundu Lodge, Vumba
Photo: Bart Wursten
Ndundu Lodge, Vumba
Photo: Bart Wursten
Marydale Point Lake Chivero Recreational Park
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Species details: Click on each item to see an explanation of that item (Note: opens a new window)
| Synonyms: | ||
| Common names: | Black-jack (E) | |
| Frequency: | Common | |
| Status: | Introduced | |
| Description: |
Annual herb to 1.5 (-2.2) m. Leaves petiolate, (1-)3-foliolate, glabrous or pilose. Terminal leaflet up to 9 × 5 cm, narrowly ovate to ovate-oblong; base cuneate; apex acuminate; margin ciliate, crenate or serrate-crenate; lateral leaflets smaller, asymmetric. Inflorescence laxly corymbose. Capitula up to 1 cm in diameter. Rays 0 (var. pilosa) or creamy-white, 4-7 and up to 1.5 cm, exceeding (var. radiata Sch.Bip.) or not exceeding (var. minor Blume) the phyllaries. Achenes up to 1.6 cm, blackish. Bristles 2-3, retrorsely barbed. | |
| Notes: | An exceptionally tall plant which attained 2.2 metres was recorded by Alistair Hull from his Harare garden. An image of Alistair overtopped by this plant may be found on this page. | |
| Derivation of specific name: | pilosa: pilose, with long soft hairs | |
| Habitat: | In disturbed habitats generally: as a weed of gardens, cultivated and fallow lands and roadsides. | |
| Altitude range: (metres) | 1060 - 1660 m | |
| Flowering time: | Sep - May | |
| Worldwide distribution: | Probably originally S American, but very widely naturalised throughout the tropics and subtropics. | |
| Zimbabwe distribution: | NWCES | |
| Growth form: | A | |
| Insects (whose larvae eat this species): | ||
| Literature: | ||
| Endemic status: | ||
| Red data list status: | ||
| Spot characters: | Display spot characters for this species | |
| Content last updated: | Monday 1 January 2007 |
Other sources of information about Bidens pilosa:
Flora of Mozambique: Bidens pilosaBiodiversity Explorer (Biodiversity of southern Africa): Bidens pilosa
ePIC (electronic Plant Information Center): Bidens pilosa
Flora Zambesiaca web site: Bidens pilosa
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Bidens pilosa
IPNI (International Plant Names Index): Bidens pilosa
Kew Herbarium catalogue: Bidens pilosa
West African Plants database: Bidens pilosa
| Home | > | List of families | > | Asteraceae | > | Bidens | > | pilosa |