Perennials. Rootstock tubercles subglobose, 3.7-6.9(-17.5) × 2.4-7 mm, with nontuberous separations 0.6-5.2 cm, 0.4-0.8 mm in diam., without thickened roots. Stem 8-29(-48) cm tall, erect, not rooting at nodes, with 0.2-0.5 mm retrorse to appressed nonglandular trichomes and usually 0.5-1.6 mm patent glandular trichomes. Stipules lanceolate to ovate, distinct. Leaves 1 alternate but opposite at inflorescence; petiole with 0.2-0.6 mm retrorse to appressed nonglandular trichomes and sometimes 0.5-1.2 mm patent glandular trichomes; leaf blade 1.5-5.1 cm, palmately cleft, ratio of main sinus/middle segment length = 0.77-0.95, pilose with appressed nonglandular trichomes; segments 5, rhombic to obtriangular, 1.2-4.3 mm wide at base, 3-8-lobed in distal half, ratio of second sinus/middle segment length = 0.26-0.46. Cymules solitary, 2-flowered; peduncle 4-10.3(-15.5) cm. Pedicel 2.7-5.9(-7) cm, with 0.2-0.6 mm retrorse to appressed nonglandular trichomes; bracteoles lanceolate. Sepals 7.1-10.9 mm, mucro 0.7-1.2 mm, ratio of mucro/sepal length = 0.08-0.15, outside with 0.5-1 mm antrorse to patent nonglandular trichomes, inside glabrous. Petals deep rose pink with a whitish base, 1.6-1.8 cm, erect to patent, outside glabrous, inside basally with trichomes, margin basally ciliate, apex rounded or rarely emarginate with a 0.2-0.3 mm notch. Staminal filaments distally pink but paler at base, lanceolate, abaxially pilose and proximal half ciliate, trichomes 0.3-0.9 mm; anthers whitish tinged with blue, 1.7-2.4 mm. Nectaries 5, hemispheric, glabrous. Stigma pink to orangish red. Fruit 2.3-2.9 cm, erect when immature; mericarps smooth, with a basal callus, with 0.3-1.1 mm erect to patent nonglandular trichomes; rostrum 1.6-2.2 cm, with a 1.6-4.5 mm narrowed apex; stigmatic remains 2.8-3.5 mm. Seeds 1.7-2.2 mm. Fl. Jul-Aug, fr. Sep-Oct. 2n = 28*.
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