无梗艾纳香 wu geng ai na xiang

Herbs. Stems branched or simple, terete, 0.8-2 m tall, glabrate at base, tomentose above. Leaves sessile, 4-16 × 1.4-6 cm, oblanceolate, lower leaves usually lyrately lobed, upper leaves entire, all velutinous-pilose on both surfaces. Capitula 3-5, in spiciform panicle, sessile or sometimes pedunculate, 5-6 mm; peduncles when present up to 10 mm. Involucre columnar or campanulate, 4-6 × 1.5-6.5 mm, herbaceous; phyllaries in ca. 5 series, outer and middle ones lanceolate or linear-lanceolate, 2-4 mm, abaxially densely pubescent, margin dry membranous, inner linear, 4-6 mm, dry membranous, abaxially glabrous or sparsely pubescent, apex acuminate. Receptacle 1.5-3 mm in diam., slightly convex, alveolate, glabrous. Corollas yellow, tubular; marginal florets numerous, corolla filiform, 3.5-4 mm, limbs 3-dentate, glabrous; central florets few, corolla tubular, 4-5 mm, with 5 triangular, papillate and pubescent lobes. Achenes brown, puberulent, ca. 1 mm, 8-10-ribbed. Pappus white, 4-5 mm. Fl. Jun-Oct.

Grassy slopes; below 700 m. Guangdong, Hainan, Jiangxi [India, Indonesia, Myanmar, Thailand, Vietnam].