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DescriptionPerennial herbs. Leaves opposite, mostly basal (in ours), entire, lobed or dissected. Capitula radiate, borne on long peduncles, solitary or in lax corymbs. Phyllaries 1-2-seriate. Receptacle with scales. Ray florets neuter or female, with large yellow rays. Disk florets yellow. Achenes flattened, winged. Pappus of 2 scales, soon caducous.