Description from Flora of China
Sopubia comosa (Bonati) T. Yamazaki.
Herbs, ca. 50 cm tall. Stems stout, terete, fastigiate branched above, densely hispidulous. Leaves subsessile; leaf blade linear to filiform, 2-7 cm X 1-3 mm, abaxially scabrous, adaxially glabrescent, margin revolute, entire or with 2 acuminate teeth. Bracteoles ovate, ca. 4 X 2-3 mm, scabrous, apex attenuate-acuminate. Calyx ca. 4 X 4 mm, hirsute, 5-angular, with 5 thickened folds between lobes; lobes deltoid-lanceolate, fleshy, scabrous, margin revolute. Corolla rose-violet, tubular, ca. 8 mm, outside sparsely pilose; lobes orbicular, ca. 2 X 2 mm. Capsule globose, compressed, ca. 4 X 4 mm. Seeds oblong, ca. 0.6 X 0.3 mm.
Open grassland. S Yunnan [Cambodia, Laos, Thailand].