滨艾 bin ai

Herbs, biennial or short-lived perennial, 50-90 cm tall, much branched, gray arachnoid pubescent, glabrescent; stems purplish. Leaves thickly textured, basal ones rosulate, withering before anthesis; petiole 3-13 cm; leaf blade 11-18 × 8-16 cm, arachnoid when young, 2- or 3-pinnatisect, flagellate, or palmately 2- or 3-partite; segments 3(or 4) pairs, linear, ca. 2 mm wide, apex rounded. Lower and middle stem leaves: leaf blade elliptic-ovate, 3-5 × 3-5 cm, pinnatisect; segments 2 or 3 pairs; lobes 8-12 × 1.5-2 mm. Uppermost stem leaves 3-5-sect; leaflike bracts narrowly linear-lanceolate, 10-30 × 1.5-2 mm. Synflorescence a moderately broad panicle, main branches ascending, relatively long. Capitula pedunculate, bracteolate, nodding. Involucre obconical, 4-5 mm in diam. Marginal female florets 10-15; corolla 1.5-2 mm. Disk florets 20-30, bisexual; corolla 1.5-2.5 mm. Achenes obovoid-ellipsoid, 1.2-2 mm, base cuneate, apex rounded, glabrous. Fl. and fr. Jul-Oct. 2n = 16.

Coastal beaches. N Taiwan, E Zhejiang [Japan, Korea].