Herbs, annual, 4-23 cm tall; root fusiform. Stems ascending, branched at base, sparsely pilose to glabrate. Leaves winged petiolate, blade obovate-lanceolate to obovate-spatulate, 1-2.5 × 0.5-1.5 cm, surfaces sparsely hispidulous on veins or glabrate, lateral veins 2-4-paired, base attenuate, margin coarsely serrate or entire, apex acuminate. Capitula 2-3 mm in diam., usually 5-10 fascicled. Involucre hemispheric; phyllaries 2-seriate, ovate-oblong, 1.5-2 mm, glabrous, margin entire, 3-veined. Female florets multiseriate, usually without corolla; disk florets few, corolla 1-1.1 mm. Achenes oblong-fusiform, slightly compressed, 0.7-0.8 mm, scabridulous, multiveined. Pappus of 8-13 pinkish bristles 0.44-0.54 mm, slightly shorter than styles in female florets, in disk florets of 6-8 white, smooth bristles ± equaling tube.
Home