Plant almost glabrous, 5-20 cm. Leaves 1-3.5 by 1-2 cm, ovate to ovate-oblong, acute, truncate to cordate at the base, glabrous or with some scattered hairs along the nerves beneath, margin dentate; nerves c. 4 pairs; petioles c. 1-1.5 cm. Flowers inserted near the base of the midrib, yellow (ex coll.). Pedicels 4-6 mm, glabrous. Calyx tube 1-2 mm, glabrous, lobes 2-4 mm, linear, somewhat obtuse. Corolla tube 0.5-1 mm, posterior lobes 6-8 mm, linear, 1-1.5 mm wide at the base, twice as long as the anterior ones, acute, glabrous, anterior lobes 3 by 1.5 mm, ovate, acute, connate at least up to the middle, inside papillose. Androecium 2-3 mm; anthers 1-1.5 mm, posterior ones dorsally pilose, anterior ones with a few setae on top. Capsule 4-4½ by 2-3 mm. Seeds about 0.5 mm, verruculose, showing on the surface of the ripe fruit.
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