阳朔小野芝麻 yang shuo xiao ye zhi ma

Shrubs. Stems ± terete, tawny hispidulous. Petiole ca. 6 mm; leaf blade ovate-oblong or oblong-lanceolate, 4.5-5.5 × 2.8-3.6 cm, papery, adaxially dark olive green, sparsely pilose, midrib densely appressed hairy, abaxially appressed hirtellous, veins tawny villous, base broadly cuneate, margin sparsely serrate, apex obtuse or acute. Verticillasters 2-flowered, 1 or 2 ± terminal on an axillary shoot 2.5-6.5 cm. Pedicel ca. 2 mm. Calyx campanulate, ca. 9 × 5 mm, densely tawny tomentose; teeth lanceolate, as long as calyx tube. Corolla ca. 1.6 cm, pubescent outside except for appressed silky upper lip; tube ca. 1.2 mm wide; upper lip oblong, ca. 8 mm, apex emarginate; lower lip ca. 10 × 8 mm, lobes subcircular, middle lobe slightly constricted at base. Ovary lobes sparsely hirtellous at apex. Nutlets triquetrous, oblong, basally attenuate, apex subtruncate, ca. 3 × 1.6 mm. Fl. and fr. Jul.

* Thickets; ca. 200 m. Guangxi (Yangshuo Xian).