形态特征：Perennial herb. Stems rhizomatous, cylindrical, seldom branched, 0.5–1.0 cm long, 0.3–0.5 cm in diameter; inter- nodes inconspicuous. Leaves 18–35 (–59), opposite in young plants, later phyllotaxy becoming blurred and leaves appearing in a spiral at the apex of the rhizome; petioles flattened, 3.0–20.0 × 1.5–2.5 mm, villous; blades ellip- tic to ovate, 1.0–3.0 × 0.5–2.2 cm, fleshy when fresh, thick papery when dry, their adaxial surface glabrous and abaxial surface reddish-purple and villous, obtuse at apex, cuneate to broadly cuneate at base, with margin entire and ciliate; lateral veins inconspicuous. Cymes 6–18, axil- lary, 1–3-branched, 3–9-flowered; peduncle 3–5 cm long, densely pubescent; bracts 2, opposite, lanceolate, 2.0–3.0 × 0.5 mm, densely pubescent, with entire margin. Pedicel 5–8 mm long, densely glandular and eglandular-pubescent. Calyx 5-parted to base; segments equal, narrowly triangular, 3–4 × 1 mm, densely pubescent outside, sparsely eglandu- lar-puberulent inside, with entire margin and acute apex. Corolla1.3–1.5cmlong,glandularandeglandular-puber- ulent outside, inside sparsely glandular-puberulent; tube tubular, 7.0–10.0 mm long, 2.0–2.6 mm in diameter at the base and 3–5 mm in diameter at the mouth, its outer surface purplish-yellow, upper inner surface and honey guides yel- lowish, lower inner surface reddish; limb yellow or pale yel- low, distinctly 2-lipped; adaxial lip 2-lobed from near base with lobes sub-orbicular, ca 4.0 × 4.0–4.5 mm; abaxial lip 3-lobed to the middle with lobes sub-orbicular to broadly ovate, ca 3.0–4.0 × 4.0–4.5 mm. Stamens 2, adnate to ca 2.5 mm above the abaxial side of corolla tube base; filaments yellow, ca 3 mm long, geniculate at the middle, glandular and eglandular-puberulent; anthers coherent face to face, divaricate, ca 1.2 mm long, glabrous. Staminodes 3, lateral ones ca 2 mm long, capitate at apex, adnate to 2 mm above the corolla base, the central one inconspicuous, adnate to ca 0.5 mm above the corolla base, all sparsely hairy. Disc annular, slightly repand, ca 0.6 mm high, glabrous. Pistil 8.6–11.5 mm long; ovary narrowly ovoid, 2.1–3.0 mm long, glandular and eglandular-pubescent; style linear, 5.7– 7.6 mm long, glandular and eglandular-pubescent; stigma chiritoid with upper stigma lobe absent and lower stigma lobe lamellar with slightly bilobed apex, 0.65–0.86 mm long, Capsule narrowly ellipsoid, ca 5 mm long, loculicid- ally dehiscing. Seed unknown.
