Didymocarpus subalternans DidymocarpussubalternansWallich ex R. Brown; Henckelia aromatica (Wallich ex D. Don) Sprengel.

Stems 7-12(-25) cm, appressed puberulent. Leaves mostly opposite, basal 2 often alternate; petiole 0.1-3.5 cm; leaf blade ovate to elliptic, rarely triangular, 2-6.8(-11) X 1.3-4.2(-5.6) cm, thin papery to papery, adaxially appressed puberulent, sometimes yellow glandular, abaxially puberulent along veins, sometimes yellow glandular, base broadly cuneate to subcordate, margin dentate to serrate or crenate, apex acute to obtuse; lateral veins 4 or 5 on each side of midrib. Cymes 2-5-flowered; peduncle 2.5-3.5(-7) cm, sparsely glandular puberulent; bracts free, ovate to orbicular-ovate, 2-2.5(-5) mm, sparsely glandular puberulent, margin entire. Pedicel 5-14 mm. Calyx slightly zygomorphic, 3-4 mm; limb indistinctly 2-lipped, 5-lobed; tube ca. 2.5 mm; lobes nearly equal, triangular, 1.5-3 X ca. 1.5 mm, outside sparsely glandular puberulent, inside glabrous, margin entire. Corolla purple-red, ca. 1.6 cm, glabrous; tube nearly tubular, ca. 1.2 cm X 4 mm; adaxial lip ca. 2.2 mm; abaxial lip ca. 5.5 mm. Stamens glabrous; filaments ca. 4 mm; anthers ca. 2 mm; staminodes 3, 2.5-4 mm. Pistil ca. 1.3 cm, glabrous; ovary ca. 1 cm. Capsule 2.5-3 cm. Fl. Aug.

Grassy slopes, on rocks; 2500-2800 m. S Xizang [N India, Nepal].