Perennials. Rootstock ± horizontal, 3.6-8 mm in diam., not tuberculate, with thickened roots along rootstock. Stem 18-60 cm tall, trailing or ascending, not rooting at nodes, with 0.2-1 mm patent to retrorse nonglandular trichomes. Stipules broadly ovate, connate. Leaves opposite; petiole with 0.3-1 mm patent to retrorse nonglandular trichomes; leaf blade 2.8-7.2 cm, palmately cleft, ratio of main sinus/middle segment length = 0.75-0.92, pilose with appressed nonglandular trichomes; segments 5, rhombic, 3.4-9.8 mm wide at base, 5-11-lobed in distal half, ratio of second sinus/middle segment length = 0.21-0.38. Cymules solitary, 1-flowered; peduncle (0.9-)2.4-7.6(-15.4) cm. Pedicel 1.5-3(-5) cm, with 0.2-0.8 mm patent to retrorse sometimes uncinate nonglandular trichomes; bracteoles lanceolate. Sepals 6.5-10.1 mm, mucro 1.1-2.5 mm, ratio of mucro/sepal length = 0.14-0.24, outside with 0.2-1.4 mm antrorse to patent nonglandular trichomes, inside glabrous. Petals light purplish with a whitish base, (1.2-)1.4-1.8(-2) cm, erect to patent, both surfaces basally with trichomes, margin basally ciliate, apex rounded or rarely emarginate with a 0.2-0.4 mm notch. Staminal filaments purplish distally but paler at base, lanceolate, abaxially pilose and proximal half ciliate, trichomes 0.2-0.6 mm; anthers bluish, 1.7-2.1 mm. Nectaries 5, hemispheric, abaxially glabrous, apex with a tuft of trichomes. Stigma deep pink. Fruit 2.4-3.2 cm, erect when immature; mericarps smooth, with a basal callus, with 0.3-1.2 mm erect to patent nonglandular trichomes; rostrum 1.5-2.3 cm, with a 1.6-3.4 mm narrowed apex; stigmatic remains 3.5-5.6 mm. Seeds 2.3-3.5 mm. Fl. Jul, fr. Aug.