Description from Flora of China
Herbs, annual or perennial, scapose, caespitose, or stem rarely branched. Leaves rosulate, blade spatulate or oblanceolate, entire or repand-dentate. Capitula radiate, often solitary, heterogamous, pedunculate or scapose. Involucre hemispheric or broadly campanulate; phyllaries 2-seriate, unequal to subequal, leaflike. Receptacle swollen or conic, naked. Ray florets 1-seriate, white, often tinged purplish crimson, apically entire; disk florets numerous, yellow, fertile; style branch tips short, triangular. Achenes obovoid, compressed, 2-ribbed, beakless. Pappus absent or rarely of few, very short, basally connate bristles.
Eight species: Asia, Europe; one species (introduced) in China.
(Authors: Chen Yilin (陈艺林 Chen Yi-ling); Luc Brouillet)