翼齿六棱菊 yi chi liu leng ju

Conyza crispata Vahl, Symb. Bot. 1: 71. 1790; Blumea pterodonta Candolle; Laggera intermedia C. B. Clarke; L. pterodonta (Candolle) Schultz Bipontinus ex Oliver; L. purpurascens Schultz Bipontinus ex Hochstetter.

Herbs. Stems much branched, 40-100 cm tall, stems and branches narrowly winged with irregular deeply toothed lobes or interrupted wing; stem teeth and leaves densely pubescent, mainly with short erect glandular hairs. Lower leaves sessile or sometimes with winged, deeply toothed petiole to 15 mm, blade narrowly obovate, 5-17 × 1.5-6 cm, base long attenuate, margin subentire to serrate-dentate, apex acute; upper leaves narrower, slightly tapered below, oblong, sometimes subobtuse. Capitula terminal, pink to purple, 10-15 mm in diam.; peduncles slender. Involucre ca. 7 mm in diam.; phyllaries 4.5-9 mm, at least outer ones glandular-pubescent. Corolla 6.5-8 mm. Achenes ca. 1 mm. Pappus ca. 6 mm. Fl. Jan-Jul. 2n = 20.

Strongly aromatic glandular weedy herbs on dry hill slopes, old clearings, upland rice fields, and wastelands; below 2000 m. Guangxi, Guizhou, Hubei, Sichuan, SE Xizang, Yunnan [Bhutan, India, Thailand, Vietnam; tropical Africa].