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

126. Strobilanthes euantha J. R. I. Wood, Kew Bull. 58: 697. 2003.

腾冲马蓝 teng chong ma lan

Herbs 0.5-1.5 m tall, perennial, slightly anisophyllous. Stems dark green, deeply sulcate and ridged, glabrous. Petiole 0-2.6 cm, glabrous; leaf blade ovate to ovate-elliptic, 4-20 × 3-12 cm, abaxially paler green and sparsely pilose along veins, adaxially dark green, pilose along margin, and with prominent cystoliths, secondary veins 5-8 on each side of midvein, base cordate to abruptly narrowed and often somewhat oblique, margin serrate, apex acuminate. Inflorescences terminal, open panicles, to 15 cm; peduncle ca. 3 cm, gland-tipped pilose; rachis gland-tipped pilose; bracts obovate, 1-2 mm, caducous before flowers open, apex rounded; bracteoles similar to bracts. Flowers distant on rachis, usually 1 per node. Pedicel ca. 3 mm, gland-tipped pilose. Calyx ca. 4 mm, accrescent to ca. 7 mm in fruit, glabrous, 5-lobed to ca. 1 mm from base; lobes oblong to oblanceolate, apex truncate to emarginate. Corolla pale lavender to pale pink, 2.2-3.5 cm, arcuate, glabrous; tube basally cylindric and narrow for 0.6-1.9 cm then ventricose and widened to 8-10 mm at mouth; lobes ovate, ca. 4 × 4 mm, apex acute. Stamens 4; filaments glabrous; shorter filament pair ca. 2 mm, incurved; longer filament pair 1-1.2 cm, erect, slightly exserted; anther thecae spherical, ca. 1 mm in diam. Ovary glabrous; style 2.2-2.7 cm, glabrous. Capsule narrowly oblong-obovoid, ca. 1.4 cm, glabrous, 4-seeded, apex acuminate. Seeds ovate-suborbicular in outline, ca. 2.5 × 2 mm, pubescent. Fl. Sep-Oct, fr. Dec.

Forests; 1500-2100 m. Yunnan (Gaoligong Shan) [Myanmar].


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