Annual, biennial or perennial herbs. Stems erect, hollow. Leaves alternate, cauline, undivided or pinnately lobed; base ± auriculate to sagittate; margin often spiny-ciliate. Phyllaries several-seriate, imbricate; outer
eventually swollen at base. Receptacle naked, pitted. Florets yellow. Achenes flattened, truncate above, ± strongly
ribbed; beak 0. Pappus several-seriate, dimorphic,
consisting of setae and fine down-like hairs intermixed. Burundi: 4 taxa. Insects associated with this genus: |
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