Laxly branched half-woody shrub to c. 60 cm. tall. Branchlets pubescent with short retrorse hairs or quite glab.; length of internodes us. many × diam. Lvs spreading, 3-7-(10) × 1·5-3 cm. including narrowly winged petiole 1-1·5 cm. long; lamina oblong-elliptic to suborbicular, obtuse to subacute, subcoriac., glossy above, pale beneath, glab. or faintly pubescent on midrib; margin evenly serrate-dentate to sharply serrate. Infl. a broad terminal panicle to 20-(30) cm. long, us. with second order branching towards base; ultimate branchlets rather lax-fld spikes, sts 4-5 cm. long. Fls sessile, bracts to 2 mm. long, broad-ovate, acute, ciliolate. Calyx-lobes similar to bracts but larger and more obtuse, us. pubescent at base, us. 4 in number and overlapping. Corolla lavender to white, tube < calyx, lobes to 4 mm. long; style long and stigma distinctly lobed. Capsule erect, > calyx when mature, very turgid, glab.; seeds narrow-oblong, slightly winged, > 1/2 capsule-length.