Herbs perennial, 30--80 cm tall. Stems erect, subterete to slightly angular, ± glandular on upper part. Leaves opposite; petiole 2--4 mm; leaf blade elliptic to ovate, 1.5--4.5 X 0.9--2 cm, glabrescent, minutely glandular, base cuneate, apex acute. Racemes terminal, 6--30 cm, glandular; bracts linear. Pedicel 6--10 mm in fruit, ca. 2 X as long as bracts. Calyx lobes lanceolate, ca. 3.5 mm, enlarging to 5 mm in fruit, red glandular striate outside, margin membranous. Corolla ca. 6.5 mm, parted to 2/3; lobes oblong, ca. 1.5 mm wide; sinus between lobes acute. Stamens ca. as long as corolla lobes, adnate to their bases; anthers elliptic, dorsifixed, ca. 1.2 mm. Ovary ovoid; style ca. 4 mm. Capsule subglobose, 4--5 mm in diam.
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