9138.000 Parthenium L.

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 alternate, 2-pinnately lobed. Capitula in terminal panicles, radiate, heterogamous. Phyllaries in 2-3 series. Receptacular scales present. Disk florets sterile, ray florets fertile. Corolla of female florets small, subcircular; of disk florets narrowly funnel-shaped. Achenes of ray florets flattened, clasped by a phyllary and 2 lateral receptacular scales. Pappus of 2 recurved awns, forming an apparent rim to the achene.

Derivation of name: a Greek generic name for Asteraceae with white florets

Worldwide: 16 species in North America and the West Indies

Zimbabwe: 1 taxon.

Links to taxa: View: living plant images - herbarium specimen images - all images for this genus

Species	FZ divisions	Content
hysterophorus L.	W,C,E,S	Description, Image

Other sources of information about Parthenium:

Our websites:

Flora of Botswana: Parthenium
Flora of Mozambique: Parthenium

External websites:

African Plants: A Photo Guide (Senckenberg): Parthenium
BHL (Biodiversity Heritage Library): Parthenium
EOL (Encyclopedia of Life): Parthenium
GBIF (Global Biodiversity Information Facility): Parthenium
Google: Web - Images - Scholar
iNaturalist: Parthenium
IPNI (International Plant Names Index): Parthenium
JSTOR Plant Science: Parthenium
Mansfeld World Database of Agricultural and Horticultural Crops: Parthenium
Plants of the World Online: Parthenium
Tropicos: Parthenium
Wikipedia: Parthenium