Description from Flora of China
Pedicularis lucifuga Bonati; P. macrosiphon var. tribuloides (Bonati) H. L. Li; P. tribuloides Bonati.
Herbs perennial, usually densely tufted, drying black. Stems slender, flexuous, ascending or repent, to 40 cm. Proximal leaves usually ± opposite, distal ones alternate; petiole to 6 cm, pubescent; leaf blade ovate-lanceolate to linear-oblong, to 10 cm, abaxially villous along midvein, adaxially sparsely pubescent, pinnatisect; segments 7--12 pairs, ovate to oblong, spinescent double dentate. Flowers widely spaced. Pedicel to 1 cm. Calyx ca. 1 cm, slightly cleft anteriorly, villous along veins; lobes 5, unequal. Corolla pale purple to rose, 4.5--6 cm or sometimes to 7--8 cm; tube erect, 4--5 cm, glabrous; galea bent at a right angle apically; beak straight, short; lower lip longer than galea, ca. 1.5 X 1.4 cm. Filaments glabrous. Capsule completely enclosed by calyx, oblong to obovoid, compressed, 1--1.2 cm, apex acute. Fl. May--Aug, fr. Jul--Sep.
* Moist shaded forests, ravines; 1200--3500 m. NW Sichuan, NW Yunnan.