Herbs to 10 cm tall, isophyllous. Stems prostrate, 4-angled, glabrous, internodes usually less than 1 cm, rooting at basal nodes. Leaves shortly petiolate or sessile; leaf blade oblong-lanceolate, 0.7-3 × 0.3-0.7 cm, both surfaces glabrous, secondary veins ca. 3 on each side of midvein, base cuneate, margin entire or apically inconspicuously serrate, apex obtuse. Flowers axillary, solitary. Bracts similar to leaves but smaller; bracteoles linear-spatulate, 4.5-5 mm, apex obtuse. Calyx 5.5-6 mm, 5-lobed almost to base; lobes lanceolate, margin sparsely ciliate. Corolla purple, ca. 1.1 cm, straight; tube basally cylindric and narrow for ca. 4 mm then widened to ca. 4.5 mm at throat, outside reported, perhaps erroneously, to be glabrous; lobes ?obcordate, 2-2.5 mm, subequal. Stamens 4, included; filaments glabrous, shorter pair ca. 1.2 mm, longer pair ca. 3.5 mm; anther thecae parallel; pollen type 10. Ovary glabrous; style ca. 8 mm, slightly hairy. Capsule oblong, ca. 6.5 mm, glabrous, 4-seeded. Seeds ovate in outline, ca. 2 × 2 mm, densely appressed pubescent. Fl. Aug-Sep.
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