Stems gradually ascending, branched from base, 6-32 cm tall, short strigose. Lower stem leaves petiolate; upper stem leaves sessile, spatulate to linear-spatulate or oblong, 1.5-7.5 cm × 2.5-12 mm, adaxially densely short strigose, hairs discoid at base, base attenuate, apex rounded to obtuse; midvein slightly sunken. Inflorescences terminal or axillary, many flowered, becoming ± paniculate, ca. 10 cm, much branched; branches short strigose. Pedicel 1-2.5 mm. Calyx 2-2.5 mm, to 3-3.5 mm in fruit, densely strigose outside, parted nearly to base; lobes linear-lanceolate. Corolla dark blue; tube 2-3 mm, glabrous; appendages nearly trapeziform, ca. 0.6 mm, short hispid; limb 5-8 mm wide, glabrous; lobes orbicular-obovate. Nutlets triangular-ovoid, ca. 2 × 1.5 mm, finely tuberculate; aperture deltate, on upper part of abaxial surface, ca. 1 mm; attachment scar above base adaxially. Fl. Jul-Sep.
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