红河山壳骨 hong he shan ke gu

Strobilanthes teysmannii Miquel, Fl. Ned. Ind. 2: 799. 1858 ["teysmanni"].

Shrubs. Stems reddish brown, 4-angled, glabrous. Petiole to 2.5 cm; leaf blade ovate, 3.5-9.5 × 1.5-4.5 cm, abaxially pubescent along veins, adaxially sparsely pubescent along midvein, secondary veins 8-10 on each side of midvein, base broadly cuneate and decurrent onto petiole, margin subentire, apex acuminate. Racemes terminal or axillary; rachis with flowers 0.5-1.5 cm apart, yellowish brown pubescent; bracts triangular, 2-3 mm, margin ciliate; bracteoles similar to bracts. Pedicel 0-4 mm, pilose. Calyx ca. 5 mm, pubescent; lobes linear, slightly unequal. Corolla pale purple, ca. 3.5 cm; tube ca. 2.5 cm; limb 5-lobed, slightly 2-lipped. Stamens inserted at corolla throat; anthers as long as filaments. Ovary pilose; style ca. 2 cm, slightly white villous; stigma 2-cleft. Capsule clavate, ca. 2.3 cm, sparsely pubescent. Seeds ovate in outline, ca. 3 × 3 mm, verrucose, glabrous. Fl. Apr-Jun, fr. Aug.

Thickets; 100-300 m. Yunnan [Indonesia, S Thailand].