Glabrous, well branched shrub to 2 m tall. Petiole 15-20 mm long; blade elliptic or ovate-elliptic, 10-24 x 4.5-8 cm, apex acute to acuminate, base attenuate, margin entire or crenulate; prominently veined, secondary veins (ca. 10 pairs) glabrous or somewhat pubescent on lower surface. Inflorescence terminating main and lateral branches, spikes dense, 2-6 cm long, solitary or arranged in axillary and terminal fascicles of 1-3(-5); peduncle subquadrangular, glabrous, axillary ones, 30-40 mm long, terminal ones, 10-20 mm long; rachis minutely puberulous; bracts leafy, closely imbricate, ovate-elliptic to obovate, 12-15 x 6-8 mm, apically short-acuminate, margin entire, variegated white and green, strongly veined, glabrate to puberulous; bracteoles narrowly lanceolate, 4-5 mm long, apically acute. Calyx lobes subequal, about 6 mm long, linear lanceolate, minutely pubescent; corolla 25-30 mm long, blue, glabrous, tube slender, narrow, 18-20 mm long, dilated near tip, limb oblique, 15 mm broad, 5-lobed, lobes subequal, patent, obovate to orbicular, 7-8 x 6.5-7 mm, apically obtuse; stamens exserted about 6 mm beyond mouth of corolla tube, anthers 3 mm long; stigma unequally 2-lobed, upper lobe 2 mm long, lower lobe 0.5 mm long. Capsule about 12-15 mm long.
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A shrub. It grows 1-2 m high. The branches droop. The leaf stalks are 2-10 mm long. The leaf blade is sword shaped or narrowly oval. It is 4-11 cm long by 1.5-4 cm wide. The leaves are reddish or purple in colour.
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