Herbs to 1 m tall. Stems 4-angled, glabrous or pubescent. Petiole ca. 5 mm; leaf blade lanceolate to linear-lanceolate to oblong, 6-20 × 2-4 cm, glabrous, secondary veins ca. 5 on each side of midvein, base attenuate and decurrent onto petiole, margin entire or crenulate, apex acuminate. Spikes 3-8 cm; peduncle 2-37 mm, gland-tipped pubescent; bracts yellowish white with green along veins, oblong to lanceolate, 1-2.2 × 0.2-0.9 cm, apex acuminate; bracteoles lanceolate, ca. 4 mm, gland-tipped pubescent. Calyx ca. 6 mm, outside pilose, 5-lobed to middle; lobes lanceolate, ca. 1 mm wide. Corolla blue to light purple, ca. 4.5 cm, gland-tipped pubescent; tube basally cylindric for ca. 3 cm; lobes obovate, ca. 6 × 5 mm. Stamens included; filaments ca. 3 mm, glabrous. Ovary gland-tipped pubescent; style hirsute. Capsule 1-1.4 cm, gland-tipped pubescent. Seeds gold to reddish brown to blackish, 3-3.5 × 2.2-2.7 mm. Fl. Dec-Mar.
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