Cosmic two-feather grass, alias: Cosmic two-feather grass, Qiu Ying. Annual or perennial herbs, 1-2 m high. Roots fusiform, fibrous roots, or adventitious roots near the base of stems. Stem glabrous or slightly pilose. The leaves are pinnately parted and the lobes are linear or filiform. Head solitary, 3-6 cm in diameter. The outer layer of involucral bracts is lanceolate or linear-lanceolate, nearly leathery, light green, with deep purple stripes. The tongue flower is purple, pink or white; The tongue is elliptic and obovate, 2-3cm long and1.2-1.8cm wide, with 3-5 blunt teeth; Tubular flowers are yellow, 6-8 mm long, short tubular, upper cylindrical, and lobes lanceolate. Achene is dark purple, hairless, with a long beak at the upper end and 2-3 spikes. The flowering period is from June to August, and the fruiting period is from September to June. This famous ornamental plant is native to Mexico and the United States, and is widely cultivated in China. It often grows naturally along roadsides, ridges and streams. Yunnan and western Sichuan are naturalized in a large area, with an altitude of 2700 meters.