9130.000 Acanthospermum Schrank

Wild, H. (1967) The Compositae of the Flora Zambesiaca area. 1. Heliantheae. Kirkia 6(1) 1-62

Description of the genus

Annual herbs (in ours). Leaves opposite, undulate or dentate. Capitula small, enlarging in fruit, solitary, radiate, heterogamous. Ray florets female, fertile with a very short yellowish ray; disk florets bisexual, sterile. Phyllaries in 2 series: outer herbaceous; inner covered in hooked spines, enveloping closely the achenes of the female flowers. Receptacle convex, with scales. Achenes of ray florets oblong, smooth, each tightly enfolded in one of the enlarged spiny phyllaries; achenes of disk florets abortive. Pappus 0.

Derivation of name: from Greek: acanthos meaning a thorn, sperma a seed, referring to the spiny achenes.

Worldwide: 6 species in tropical America; some introduced to Old World.

Caprivi: 1 taxon.

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hispidum DC.Description, Image

Other sources of information about Acanthospermum:

Our websites:

Flora of Botswana: Acanthospermum
Flora of Malawi: Acanthospermum
Flora of Mozambique: Acanthospermum
Flora of Zambia: Acanthospermum
Flora of Zimbabwe: Acanthospermum

External websites:

ePIC (electronic Plant Information Center): Acanthospermum
Flora Zambesiaca web site: Acanthospermum
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Acanthospermum
Wikipedia: Acanthospermum
IPNI (International Plant Names Index): Acanthospermum
Kew Herbarium catalogue: Acanthospermum

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2014-23

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2023). Flora of Caprivi: Genus page: Acanthospermum.
https://www.capriviflora.com/speciesdata/genus.php?genus_id=1510, retrieved 25 March 2023

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