Shrub or small tree, to 3 m. Twigs densely obliquely to patently rusty hirsute. Leaves spirally arranged or alternate, rather densely patently hirsute beneath, or only midrib and nerves hairy, acuminate to caudate with rounded to cordate base and usually rather coarsely sharp-dentate margin, ovate, 2½-7 by 1¼-3½ cm; nerves 3-6 pairs meeting in a looped intramarginal vein; petiole 1-2 mm. Flowers in 1-flowered raceme, axis ½ mm, with 1½ mm long bract and the c. 1 mm long bracteoles loosely appressedly rusty hirsute. Pedicel c. 1 mm. Calyx rusty hirsute, divided into the semi-elliptic rounded 1-1½ mm long lobes. Corolla c. 5 mm. Stamens 60-90. Disk stellate, densely hirsute. Ovary rusty hirsute, c. 1 mm high; style glabrous, c. 6 mm. Fruit narrowly flask-shaped, often sparsely hairy, intense indigo-blue, c. 13 by 4 mm, the persistent calyx not included. Seed 1, straight, narrowly elliptic, embryo straight.
In forest, in damp shady places, often in crevices of granite rocks, 1500-3200 m. Fl. Febr.-Oct., fr. Febr.-May, Sept.-Oct.
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