Stems ascending, usually branched from base, 4-8 cm tall, densely short hispid, with few intermixed bristles. Petiole of basal and lower stem leaves to 6 mm; leaf blade spatulate to oblong; upper stem leaves short petiolate to sessile, elliptic to oblong, 0.5-1.5 cm × 2-5 mm, densely short strigose, base attenuate to broadly cuneate, apex subacute to obtuse. Pedicel to 3 mm, densely short strigose. Flowers opposite leaves, or few and crowded in terminal short inflorescences. Calyx ca. 1.8 mm, parted nearly to base; lobes narrowly triangular, densely short pubescent outside. Corolla blue; tube 1-1.2 mm; appendages lunate, ca. 0.2 mm, with hairs; limb 2.5-3 mm wide; lobes broadly elliptic-obovate. Nutlets ovoid, 1.5-1.8 × ca. 1.2 mm, finely tuberculate, glabrous or short pubescent; aperture above middle, suborbicular, 0.2-0.3 mm wide; attachment scar at lower part of adaxial surface. Fl. Aug-Sep.
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