Herbs erect, annual, 8-40 cm tall. Stems yellowish, subterete, pilose. Petiole short to obsolete; leaf blade lanceolate, 1-3.5 cm × 3-10 mm, herbaceous, adaxially subglabrous, abaxially pilose, densely impressed glandular, base cuneate, margin remotely serrate, apex acute. Spikes 2-5 cm, to 1 cm in diam., secund; bracts overlapping, united, broadly reniform, margin ciliate. Pedicel short. Calyx tubular, ca. 2.5 mm, pilose, glandular; teeth lanceolate, anterior 2 longer, spinescent outside and at apex. Corolla 5-6.5 mm, pilose outside, glabrous inside; tube ca. 0.5 mm wide at base, to 2 mm wide at throat; upper lip emarginate, ciliate; lower lip slightly spreading, lobes erose, middle lobe subcircular, lateral lobes semicircular. Anterior stamens exserted; anthers ovoid. Style included, apex subequally 2-cleft. Nutlets dark brown, oblong, ca. 1 mm. Fl. Sep-Oct, fr. Oct-Nov.
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