Annual herbs or suffrutices.
Leaves alternate, simple, semi-amplexicaul, usually
discolorous. Capitula homogamous and discoid or (in ours)
heterogamous; inner florets actinomorphic, bisexual; outer
male, radiate. Phyllaries many-seriate, imbricate.
Receptacular scales present, resembling the inner phyllaries.
Ray florets when present with large, deep-red, 3-fid
rays. Achenes barrel-shaped, 5-angled. Pappus of 4-5, caducous, barbellate setae. Worldwide: 12 species in eastern, central and southern tropical Africa Zimbabwe: 3 taxa. |
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