磨盘草 mo pan cao

Sida indica Linnaeus, Cent. Pl. 2: 26. 1756; Abutilon asiaticum (Linnaeus) Sweet; Abutilon cavaleriei H. Léveillé; A. cysticarpum Hance ex Walpers; A. indicum var. populifolium (Lamarck) Wight & Arnott; A. populifolium (Lamarck) G. Don; S. asiatica Linnaeus; S. populifolia Lamarck.

Herbs subshrublike, annual or perennial, erect, many branched, 1-2.5 m, entire plant gray puberulent. Stipules subulate, 1-2 mm, curved outward; petiole 2-4 cm, gray puberulent and sparsely hairy, hairs silklike, ca. 1 mm; leaf blade ovate-orbicular or nearly orbicular, 3-9 × 2.5-7 cm, densely gray stellate puberulent, base cordate, margin irregularly serrate, apex acute or acuminate. Flowers solitary, axillary, 2-2.5 cm in diam. Pedicel ca. 4 cm, articulate near apex, gray stellate puberulent. Calyx green, disk-shaped, 6-10 mm in diam., densely gray puberulent, lobes 5, broadly ovate, apex acute. Corolla uniformly yellow; petals 7-8 mm. Staminal column stellate scabrous. Ovary 15-20-loculed. Fruit black, flat topped, ca. 1.5 cm in diam.; mericarps 15-20, apex acute, slightly awned, long stellate scabrous. Seeds reniform, sparsely stellate. Fl. Jul-Oct.

Disturbed sites on sandy soils; below 800(-1500) m. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Sichuan, Taiwan, Yunnan [Bhutan, Cambodia, India, Indonesia, Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam].

Some authors, such as Borssum Waalkes (Blumea 14: 175. 1966), include the following species within Abutilon indicum.