Stems erect, branched above or throughout, 15-45 cm tall, moderately densely spreading bristly or hispid. Stem leaves gradually reduced upward, short petiolate to sessile, narrowly oblong to narrowly spatulate, 2-9 cm, short strigose, adaxially sparsely bristly, base attenuate, margin entire to obscurely finely dentate, apex acute. Inflorescences terminal, ca. 1 cm wide, sometimes slightly elongated to 1.5 cm; bracts to 2 mm. Flowers crowded, long pedicellate, opposite leaves on upper stems. Calyx 1.7-2.2 mm, to 3.5 mm in fruit, parted nearly to base; lobes narrowly triangular, sparsely long hispid and hirtellous outside, short strigose inside. Corolla blue; tube 1.5-5 mm, glabrous; appendages triangular to lunate, ca. 0.3 mm, short hispid; limb 4-10 mm wide, glabrous or sparsely pubescent outside; lobes suborbicular. Nutlets gray-white, broadly ovoid, 1.8-2.5 × 1.2-2 mm, with fine tubercles and extremely short hairs; aperture elliptic, on nearly entire adaxial surface; attachment scar at apex adaxially.
Home