西藏龙船花 xi zang long chuan hua

Shrubs or small trees; branches glabrous, 2-2.5 mm in diam. Leaves opposite; petiole 0.65-0.8 cm, glabrous; blade drying green or markedly discolorous, opaque, elliptic or obovate, 15-17 × 6.5-7.5 cm, glabrous on both surfaces, base cuneate to acute, apex acuminate; secondary veins ca. 11 pairs; stipules shortly fused around stem, triangular, glabrescent except adaxially villous, aristate. Inflorescence terminal, corymbiform, tripartite, sparsely puberulent, 75-100-flowered; peduncle 0.7-0.8 cm, with reduced leaves at base; secondary axes 4.5-5 cm; bracts filiform, reduced; pedicels to 1 mm. Flowers sessile to shortly pedicellate. Calyx glabrous; limb lobed to base; lobes lanceolate, ca. 1.5 mm, subacute. Corolla white, glabrous throughout; tube ca. 24 mm; lobes ovate-lanceolate, ca. 5.5 × 2.5 mm, acute. Drupe unknown.

● 1200-1500 m. SE Xizang.