Annual or perennial herbs. Leaves
alternate, sessile. Capitula solitary or in terminal
corymbs, heterogamous; outer radiate florets female; disk florets
bisexual. Phyllaries 2-3-seriate. Receptacular scales 0. Achenes
cylindric, 4-ribbed and 4-angled, setulose-pubescent on the
angles. Pappus 2-seriate; outer of short scales sometimes
connate into a crown; inner of longer setae. Worldwide: c.80 species in temperate and warm Eurasia Zimbabwe: 1 taxon. |
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