Merremia emarginata (Burm. fil.) Hall. fil.

Herbs perennial, prostrate; axial parts sparsely hirtellous or glabrescent. Stems rooting at nodes, becoming tuberculate. Petiole 0.2-3.7 cm; leaf blade reniform to broadly ovate, 0.5-3.5 X 0.6-3.5 mm, glabrous or sparsely appressed pilose, base cordate, margin entire or coarsely crenate, apex obtuse to broadly rounded or slightly emarginate. Inflorescences subsessile, 1(-3)-flowered; bracts unequal, ovate to linear, pubescent, apex acute. Pedicel 2-4 mm. Sepals obovate to circular or subquadrate, ± pubescent abaxially, margin long ciliate; outer 2 sepals 2.5-3 mm, apex obtuse, hoodlike and distinctly mucronate; inner 3 sepals 3-6 mm, deeply emarginate. Corolla yellow, tubular-campanulate, 5-9 mm, midpetaline bands distinctly 5-veined, purplish tinged outside, inside pubescent basally; limb slightly 5-lobed. Filaments pubescent basally. Ovary glabrous. Capsule enclosed by persistent calyx, brown-black, ± globular, 5-6 mm, longitudinally grooved, glabrous, apiculate. Seeds grayish brown, ca. 2.5 mm, glabrous. 2n = 30.

Old World tropics.

Guangdong, Hainan [India, Indonesia, Malaysia, Myanmar, Nepal, Philippines, Sri Lanka, Thailand; Africa].

200 m

Weedy in fields, roadsides, grasslands, on clay to sandy soils, forest floors; 0-200 m.

Evolvulus emarginatus N. L. Burman, Fl. Indica 77. 1768; Convolvulus reniformis Roxburgh; Ipomoea reniformis (Roxburgh) Choisy.

Merremia emarginata là một loài thực vật có hoa trong họ Bìm bìm. Loài này được (Burm. f.) Hallier f. mô tả khoa học đầu tiên năm 1893.

肾叶山猪菜（学名：Merremia emarginata）为旋花科鱼黄草属的植物。分布在热带带亚洲、马来西亚、印度尼西亚、菲律宾、热带非洲以及中国大陆的海南等地，多生长于林内沙质平地，目前尚未由人工引种栽培。