西藏水锦树 xi zang shui jin shu

Wendlandia tinctoria (Roxburgh) Candolle var. grandis J. D. Hooker, Fl. Brit. India 3: 38. 1880.

Trees, 3-4 m tall; branches brown, fissured, strigillose to glabrescent. Leaves opposite; petiole 0.5-1.5 cm, strigillose; blade drying leathery or thickly papery, elliptic, elliptic-oblong, or obovate-oblong, 5-17 × 2.5-7 cm, adaxially glabrous or sparsely strigillose, abaxially glabrous or sparsely pubescent on lamina, sparsely hispidulous along veins, and with pubescence denser along midrib, base cuneate or acute, apex acute or shortly acuminate; secondary veins 8-12 pairs; stipules generally persistent, triangular to ovate, 9-12 mm, strigillose, apex erect to spreading, ligulate, 5-7 mm, often longitudinally folded. Inflorescences paniculate, ovoid, 9-17 × 5-15 cm, densely brown hirsute; bracts lanceolate, ca. 5 mm. Flowers sessile. Calyx densely brown hirtellous; hypanthium portion ca. 1 mm; limb deeply lobed; lobes lanceolate, 0.5-1 mm. Corolla white, funnelform, glabrous outside; tube ca. 4 mm, white hirsute inside; lobes triangular, 1-1.2 mm. Anthers elliptic, ca. 0.8 mm, subsessile, partially exserted. Stigma 2-lobed. Capsules subglobose, ca. 2 mm in diam., pubescent. Fl. and fr. Aug.

Evergreen forests, secondary forests; 700-1300 m. Xizang (Mêdog) [Bangladesh, Bhutan, India, Myanmar, Nepal].

Springate et al. (Fl. Bhutan 2(2): 754. 1999) described the leaf size of plants from Bhutan as 10-24 × 5-11 cm and the corolla tubes there as 2.5-5 mm; these measurements might be found in Chinese plants.