肿柄菊 zhong bing ju

Mirasolia diversifolia Hemsley, Biol. Cent.-Amer., Bot. 2: 168. 1881.

Perennials, subshrubs, or shrubs, to 250(-500) cm. Petiole 2-6 cm; blade ± deltate to pentagonal, 7-33 × 7-22 cm, sometimes 3- or 5-lobed, abaxially glabrous to hispid-pilose. Peduncles 7-24 cm; phyllaries 16-28, (3 or)4-seriate, oblong to ovate, outer phyllaries 6-10 × 4-7 mm, abaxially usually glabrous, apex rounded to acute, inner 10-20 × 3-10 mm, abaxially glabrous, apex rounded to acute; paleae 10-13 × 2-3 mm, mucros 1.5-2.5 mm. Ray florets 7-14; corollas yellow, lamina linear, 48-69 × 9-16 mm. Disk florets 80-120+. Achenes 4-6 mm. Fl. Sep-Jan. 2n = 34.

Introduced and naturalized in Guangdong, Taiwan, and Yunnan [native to Mexico].