艾纳香 ai na xiang

Conyza balsamifera Linnaeus, Sp. Pl., ed. 2, 2: 1208. 1763; Baccharis salvia Loureiro; Blumea balsamifera var. microcephala Kitamura; Pluchea balsamifera (Linnaeus) Lessing.

Shrubs or subshrubs, perennial, erect, 1-3 m tall. Stems corymbosely branched, woody at base; bark grayish brown; branches terete, densely lanate-villous with yellowish white hairs. Leaves narrowly oblong, 15-18 × 3.5-5 cm, abaxially densely silky-lanate, adaxially rugose and pilose with blunt multicellular hairs, base narrowed, auriculate, auricles 10-12 mm on short petiole, margin serrulate to serrate usually with upcurved teeth, apex acuminate; veins 10-12 pairs. Capitula 6-7 mm, in spreading pyramidal panicles, pedunculate. Involucres campanulate; phyllaries in 3 or 4 series, densely lanate on outer surface, outer ones smaller, oblong-lanceolate 1-3 mm, compressed, inner longer, linear 5-6 mm. Receptacle 2.5-3 mm in diam., flat, alveolate, glabrous. Marginal florets filiform, to 6 mm, 2-4-lobed. Central florets yellow, tubular, 6-7 mm, lobes papillate, with sessile glands and sparse multicellular hairs. Achenes brown, terete, oblong, ca. 1 mm, sparsely hirsute. Pappus reddish, 4-6 mm. Fl. year-round. 2n = 18.

Dry fields, thickets, grasslands, mountain slopes, riverbanks; below 1200 m. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Taiwan, Yunnan [Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Pakistan, Philippines, Thailand, Vietnam].