Herbs perennial, 20--50 cm tall, smooth except for sparingly glandular inflorescences. Stems erect to ascending-erect, quadrangular, usually branched from base, dark purple or black glandular striate. Leaves alternate; petiole 1/3--1/5 as long as leaf blade; leaf blade elliptic, 1.5--3.8 X 0.6--1.7 cm, densely dark purple or black glandular punctate, base short attenuate, margin obscurely undulate, apex acute. Racemes 15--50 cm, laxly flowered; bracts subulate. Pedicel erect to spreading, ca. 2 mm, slightly shorter than bracts. Calyx lobes oblong, 3--4.5 mm, dark purple or black glandular striate outside, margin membranous, apex obtuse to subacute. Corolla white; tube 2--2.5 mm; lobes reflexed, spatulate, 5--6 X 1.5--2 mm, dark purple striate, apex obtuse. Stamens included; filaments adnate to base of corolla lobes, free parts ca. 1 mm; anthers elliptic, dorsifixed, ca. 1 mm. Ovary glabrous; style ca. 1 mm. Capsule globose, 5--6 mm in diam.
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