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9148.000 Xanthium - Cockleburs
Wild, H. (1967) The Compositae of the Flora Zambesiaca area. 1. Heliantheae. Kirkia 6(1) 1-62
Description of the genus
Monoecious annual herbs. Leaves alternate, crenate, deeply toothed or lobed. Capitula unisexual, discoid. Male capitula terminal, spherical, many-flowered; phyllaries few, free; receptacular scales present; corolla 5-dentate. Female capitula axillary, 2-flowered; involucre enclosing and surrounding the 2 flowers, covered with hooked bristles; corolla 0; pappus 0. Achenes obovoid or oblong, enclosed in the persistent hard involucre which bears many hooked spines.Unusual-looking plants, atypical for Asteraceae. Derivation of name: from Greek: xanthos, meaning yellow, referring to the fruit which turn from green to yellow as they ripen. Worldwide: c. 3 species, now cosmopolitan Zimbabwe: 2 taxa. |
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Links to taxa: View: living plant images - herbarium specimen images - all images for this genus
| Species | FZ divisions | Content |
| spinosum L. | W,C | Description, Image |
| strumarium L. | N,W,C,S | Description, Image |
Other sources of information about Xanthium:
Our websites:
Flora of Botswana: XanthiumFlora of Caprivi: Xanthium
Flora of Mozambique: Xanthium
Flora of Zambia: Xanthium
External websites:
African Plants: A Photo Guide (Senckenberg): XanthiumBHL (Biodiversity Heritage Library): Xanthium
EOL (Encyclopedia of Life): Xanthium
GBIF (Global Biodiversity Information Facility): Xanthium
Google: Web - Images - Scholar
iNaturalist: Xanthium
IPNI (International Plant Names Index): Xanthium
JSTOR Plant Science: Xanthium
Mansfeld World Database of Agricultural and Horticultural Crops: Xanthium
Plants of the World Online: Xanthium
Tropicos: Xanthium
Wikipedia: Xanthium
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