Description from Flora of China
Herbs. Rhizomes with long stolons, terminated in a globose to ovoid tuber 5-8 mm in diam. Stems erect to ascending, 10-25(-30) cm tall, densely spreading pilose. Petiole 0.4-1.5 cm, 3-15 cm basally, flat, densely, spreading pilose; leaf blade circular-ovate to lanceolate-ovate, or reniform, 1-1.8(-2.4) × 1.2-1.5(-2) cm, 0.5-1 × 0.8-1.3 cm basally, herbaceous, sparsely appressed pilose, abaxially glaucous, palmately veined, base subtruncate to deeply cordate, margin ± regularly 4-7-crenate, apex obtuse to rounded. Bracteoles ca. 1 mm. Flowers terminal or axillary, erect, later becoming pendent. Pedicel 2-3 mm, spreading pilose, basally 2-bracteolate. Calyx ca. 3 mm, pilose outside, to 6 mm in fruit; scutellum ca. 0.75 mm, to 3 mm in fruit. Corolla purplish or blue-purple, ca. 6 mm, sparsely pubescent outside, glabrous inside, tube erect, slightly saccate in front at base, gradually dilated to ca. 3 mm wide at throat; upper lip erect, oblong, ca. 1.5 mm, apex rounded rarely emarginate; middle lobe of lower lip spreading upward, trapeziform, ca. 4 × 5 mm, apex emarginate; lateral lobes oblong-ovate, slightly shorter than upper lip, almost entirely adnate to it. Nutlets yellow-brown, ovoid-globose, ca. 2 mm in diam., abaxially tuberculate, umbonate at apex of smooth conical adaxial side, without a wing on equatorial plane. Fl. Mar-Apr, fr. Apr.
* Shady, grassy slopes, bamboo forests, dense forests, at streamsides in tufts of grass; 100-200(-1600 m in Yunnan). Anhui, Jiangsu, Yunnan, Zhejiang.