Roettlera tibetica Franchet, Bull. Mus. Hist. Nat. (Paris) 5: 251. 1899; Didymocarpus tibeticus (Franchet) Handel-Mazzetti.

Perennials. Rhizome tuberlike, internodes conspicuous. Stems erect, 3.5-14(-25) cm, sparsely puberulent to pilose. Stem leaves 4-10, opposite, spaced along stem or crowded near apex; petiole 2-10(-30) X ca. 1 mm; leaf blade elliptic to ovate or obovate, 1-6.6 X 0.9-3.5 cm, thin papery, sparsely puberulent to pilose, eglandular, base cuneate to rounded, margin entire to repand or shallowly crenate, apex acute to rounded; lateral veins 5-7 on each side of midrib, inconspicuous. Cymes 1-4-flowered; peduncle 2.4-5.5 cm, sparsely puberulent to pilose; bracts 2, free, narrowly elliptic to lanceolate, 3-7 X 1-2 mm, pilose, margin entire, apex acute. Pedicel 0.7-1.5 cm, glandular puberulent to pilose. Calyx 5-sect from base; segments equal, linear-triangular, 6-9 X 1-1.5 mm, outside puberulent to pilose, inside glabrous, margin entire, apex acute. Corolla white, 3.2-3.6 cm, outside sparsely puberulent to pilose, inside glabrous; tube nearly tubular, ca. 2.5 X 1 cm; adaxial lip ca. 5 mm; abaxial lip ca. 1 cm. Filaments ca. 9 mm, glandular puberulent above; anthers fused by entire adaxial surfaces, ca. 2 mm, glabrous; staminodes 2, ca. 4 mm. Pistil ca. 2 cm, puberulent; ovary ca. 1 cm. Stigma obtrapeziform, ca. 2 mm, 2-lobed. Fruit and seeds unknown. Fl. Jul-Sep.

After publication of the family treatment for the Flora of China, this was treated as Henckelia tibetica (Franchet) D. J. Middleton & Mich. Möller (Taxon 60: 777. 2011).

* Forests, cliffs, on rocks; 1400-3200 m. SW Sichuan, NE Yunnan.