Description from Flora of China
Plants ca. 1 m tall. Stems cylindric, woody. Petiole 0.5-2 cm, inconspicuously winged; mid stem blade ovate or ovate-rhombic, 4-8 × 2-4.5 cm, adaxially sparsely minutely hispid, abaxially strigose especially on veins, densely orange glandular, base cuneate, margin shallowly mucronate-dentate, apex acuminate. Cymes dichotomous, sometimes 2 × dichotomous, loosely flowered; peduncle 1.5-2 cm, densely strigose; rachis densely strigose; bracts oblanceolate to subulate, persistent, minute. Pedicel ca. 1 mm, densely strigose. Calyx broadly campanulate, ca. 1.5 mm, sparsely orange glandular, villous; fruiting calyx urceolate, ca. 2 mm in diam., conspicuously netted. Corolla ca. 3 mm, puberulent, glandular; tube ca. 2 mm, cylindric, straight; upper lip oblong, slightly concave; lower lip enlarged, spreading, 3-lobed, lobes elliptic, middle lobe largest. Nutlets ovoid, apically hairy, glandular. Fl. Jul, fr. Aug-Oct.
Dry, sparse forests; 0-100 m. Hainan [Malaysia, Myanmar].