蒿子杆 hao zi gan

Chrysanthemum carinatum Schousboe, Iagttag. Vextrig. Marokko, 198. 1800; Ismelia carinata (Schousboe) Schultz Bipontinus; I. versicolor Cassini, nom. illeg. superfl.

Herbs, annual, 20-70 cm tall, glabrous or nearly so; stems erect, usually branched above middle. Basal leaves withered by anthesis; lower and middle stem leaves sessile; leaf blade obovate or narrowly elliptic, 8-10 × 3-4 cm, 2-pinnatipartite; primary lateral lobes 3-8-paired; ultimate lobes lanceolate, obliquely triangular or linear. Synflorescence a terminal cyme. Capitula (1 or)2-8, long pedunculate. Involucres cupular, 1.5-2.5 cm in diam.; phyllaries in 4 rows, inner ones ca. 1 cm. Ray achenes broadly 3-winged, wings adaxially projected into an apical rostrum. Disk achenes with 2 elevated ribs. Corona absent.

Cultivated as a vegetable; 500-2200 m. Anhui, Guizhou, Hainan, Hebei, Heilongjiang, Hubei, Hunan, Jiangsu, Jilin, Liaoning, Nei Mongol, Qinghai, Shandong, Xinjiang, Yunnan, Zhejiang [native to NW Africa (Morocco); introduced elsewhere].