Description from Flora of China
Herbs perennial, 2--25 cm tall, not drying black. Roots obconical. Stems numerous, flexuous, ascending, slightly branched basally or unbranched, villous. Leaves in whorls of 4; petiole 3--5 mm; leaf blade ovate, 1--2 cm, glabrous, pinnatisect; segments 10--14 pairs, widely spaced, oblong, pinnatipartite to pinnatisect, linear. Inflorescences spicate, interrupted; bracts leaflike. Calyx membranous, glabrous, slightly cleft anteriorly; tube 2.5--3 mm; lobes 5, equal, ovate, ca. 2.5 mm, subpinnatisect apically. Corolla tube ca. 2 X as long as calyx, ± bent at a right angle at middle, expanded apically; galea falcate apically, slightly rounded in front, apex slightly angle shaped; lower lip slightly shorter than galea, ca. 4 X 6.5 mm, middle lobe ca. 2 X 3 mm, ca. 2/3 X size of lateral lobes. Filaments glabrous. Capsule narrowly ovoid, 1--1.5 X as long as calyx, apiculate. Seeds nearly dark, 1--1.5 mm.
* W Sichuan.