Tiny, creeping, branched herb; stem terete, rooting, sparsely pilose. Leaves alternate, orbicular-reniform, 2.5-5 by 2.5-6 mm, base cordate to truncate, margin subundulate to dentate, upper surface sparsely pilose, beneath glabrous; petiole 1-3 mm. Flowers c. 5 mm, axillary. Pedicels terete, 4-5 mm, hairy, ebracteolate. Calyx lobes oblong-triangular, 2-2.5 by 0.5-0.75 mm, with a distinct tooth at the base, sparsely pilose. Corolla subcampanulate, 4 mm long, dark purplish-red, outside pilose, inside the 3 anterior lobes papillose, dorsally not entirely split to the base; dorsal lobes connate with the lateral ones for 1 mm, lateral lobes connate with the ventral one for 2 mm; all lobes ovate-deltoid, l.5 mm, acute to blunt. Filaments 1.5 mm, up to ⅓ free, equal, glabrous or hairy. Anthers from dorsal to ventral 1-0.75 mm, glandular hairy; the 2 anteriors at the apex finely hairy (according to MERRILL & PERRY 'setigeris'). Ovary cupular, 1 by 1.5 mm, long-hairy; style glabrous. Capsule cupular-ovoid, 3 by 2 mm. Seeds ellipsoid to roundish, 0.6-0.8 mm, smooth, light-brown.
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