西藏树萝卜 xi zang shu luo bo

Shrubs 1–2 m tall, or trees to 15 m tall, glabrous. Twigs terete, ca. 8 mm in diam. Leaves scattered; petiole 1–2 cm; leaf blade oblong-lanceolate, 10–21 × 2–4.5 cm, thickly leathery, secondary veins 4–6 pairs, inconspicuous, base broadly cuneate to rounded, margin slightly revolute, sparsely inconspicuously denticulate, apex acuminate. Inflorescences corymbose, 1.5–2.2 cm, 6–13-flowered. Pedicel red, 2–3 cm, fleshy, expanded upwards. Calyx tube rounded, ca. 2.5 mm, glaucous; limb red, ca. 1 cm, divided ca. 2/3; lobes ovate-lanceolate, ca. 6 × 4 mm, angled, distinctly veined. Corolla bluish purple with dark purple zig-zag bands, glaucous, tubular, ca. 1.7 cm, fleshy, with 5 raised veins; lobes triangular, ca. 1 mm. Filaments ca. 3 mm, pilose apically; anthers ca. 1.1 cm, thecae papillate; tubules nearly 3 × as long as thecae, without spurs. Berry unknown. Fl. Mar–May.

Evergreen forests, epiphytic on tall trees; 1500–2000 m. SE Xizang (Mêdog).