Deciduous shrub up to 3 m high; twigs sparsely to moderately clothed in appressed hairs, becoming ± glabrous, rounded, striate and glaucous-green to dark green. Mature branches with few lvs; lvs glabrous or sparsely to densely hairy, simple, entire, elliptic to oblong or ± linear on mature branches, acute to obtuse, (8)-15-25 mm long, up to 45 mm long in shaded shoots or seedlings; petioles 1-2 mm long. Infl. with usually numerous fragrant fls; pedicels 2-5 mm long; bract subtending pedicel narrowly triangular, 2-4 mm long; bracteole subtending calyx linear, c. 2 mm long. Calyx ± glabrous, unilabiate. Corolla 22-28 mm long. Pod becoming glabrous, oblong and flattened, 50-90 mm long; seeds smooth, dark brown.