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FOC | Family List | FOC Vol. 19 | Acanthaceae | Pseuderanthemum

2. Pseuderanthemum crenulatum (Wallich ex Lindley) Radl­kofer, Sitzungsber. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. München. 13: 286. 1883.

云南山壳骨 yun nan shan ke gu

Eranthemum crenulatum Wallich ex Lindley, Bot. Reg. 11: t. 879. 1825; E. graciliflorum Nees; E. malaccense C. B. Clarke; Pseuderanthemum graciliflorum (Nees) Ridley; P. malaccense (C. B. Clarke) Lindau.

Subshrubs or shrubs, to 3 m tall. Stems blackish brown, subterete, pubescent. Petiole 1-4 cm, puberulent; leaf blade ovate-elliptic to oblong-lanceolate, 5-15 × 3-5.5 cm, abaxially light green and pubescent along veins, adaxially slightly pubescent, secondary veins ca. 7 on each side of midvein, base cuneate to broadly cuneate, margin entire, apex acute to acuminate. Thyrses 3-10 cm, densely flowered; bracts triangular, ca. 7 × 3 mm, brown tomentose; bracteoles subulate, 3-4 × ca. 1.5 mm, brown tomentose. Pedicel 1-3 mm, pubescent. Calyx 4-5 mm; lobes linear-lanceolate, densely pubescent with non-glandular trichomes. Corolla white or light purplish, 3.5-4.5 cm, outside finely and sparingly pubescent with gland-tipped trichomes; tube 2.5-3.5 cm; lower lip 3-lobed, lobes oblong and ca. 1 cm; upper lip 2-lobed to middle. Stamens slightly exserted; filaments ca. 3 mm, glabrous; anther thecae ovoid. Ovary pilose; style basally white pilose; stigma spherical. Capsule clavate, ca. 2.5 cm. Seeds subcircular in outline, ca. 3.5 mm in diam., verrucose, glabrous. Fl. Apr-Jun, fr. Aug.

Forests, thickets; 200-1700 m. Guangxi, Guizhou, Yunnan [India, Laos, Malaysia, Thailand, Vietnam].


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