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蒴果圆筒状，长2-2.5厘米，宽约8毫米，顶端有喙，密被长绒毛。花期7-11月。
Shrubs, 1-2 m tall. Branchlets densely yellow-brown stellate puberulent. Petiole 3-9 mm; leaf blade lanceolate or oblong-lanceolate, 3.5-7.5 × 2-3 cm, both surfaces yellow-brown stellate puberulent, denser abaxially, base obtuse, margin entire or sparsely dentate toward apex, apex acute or acuminate. Inflorescence with flowers fascicled or in 1-2 cm cyme, axillary. Flowers small, ca. 12 mm. Calyx tube-shaped, 5-lobed, hairy. Petals 5, purple, unequal in length, claw and central part of limb hairy. Androgynophore tomentose at base. Staminodes linear-lanceolate. Ovary pilose; ovules ca. 12 per locule. Capsule cylindric, 2-2.5 × ca. 0.8 cm, apex beaked, densely villous. Fl. Jul-Nov.
Scrub, grasslands. C Guangdong, SE Guangxi, SE Yunnan (Zhenyuan) [Cambodia, Indonesia, Laos, Myanmar, Thailand, Vietnam].
==剑叶山芝麻生长环境==