Perennial, ± puberulent herb forming loose mats. Underground stems or rhizomes white; aerial reproductive stems erect, angular, tinged purple. Lvs all of similar size; petioles 1-3 mm long, sometimes minutely puberulent. Lamina 10-12 × 4-8 mm, elliptic or narrow-elliptic, ± puberulent above, especially towards margin, dentate with c. 4 teeth on each side; base cuneate; apex sharply acute. Peduncle 2.5-4 cm long, very slender, with 2 bracts at base; bracts c. 0.5 mm long, narrow-linear. ♀ fls solitary (♂ not seen). Calyx lobes 2-2.8 cm long, narrow-triangular, with a single tooth each side; apex acuminate. Corolla pale pink; tube c. 5 mm long; limb hairy inside towards base; upper 2 lobes c. 5 mm long, narrow-linear, recurved; lower 3 lobes 6-8 mm long, ± narrow-oblong. Staminodes with puberulent filaments and pale brown anthers. Ovary 2.5-3.5 mm long, obconic. Fr. not seen.