Annual (?), 30-40 cm high. Stem branched from near the base, covered by patent or retrorse hairs in the lower, antrorse hairs in the upper part. Leaves lanceolate to obovate or oblong, tapering towards petiole, acute to shortly acuminate, nervature distinct, reticulate on lower side, covered by nearly spreading, stiff, bristly hairs, petiole of lower leaves 5-10 mm long, blade 1.5 by 0.7 cm, petiole of middle leaves shorter, blade 3-3.5 by 0.9-1 cm, petiole of upper leaves 0-2 mm long, blade 1.5-2.5 by 0.6 cm. Inflorescence loose, elongated up to 15 cm after flowering, with leafy bracts in the lower, ebracteate in the upper part; pedicels filiform, 1 mm long in flower, elongated to 3-7 (-15) mm in fruit, curved downwards. Calyx 1.5-2 mm in flower, 2-2.5 mm in fruit, antrorsely strigillose, lobes free to the base, 0.8-1 mm wide, subacute or acute. Corolla campanulate to funnel-shaped, 2.5(-3) mm long, 4.5 mm in diam., glabrous, tube shorter than calyx, lobes elliptical, 1.5 mm long; fornices trapeziform to subquadrate, indistinctly emarginate, subinvolute at apex. Stamens: anthers subsessile a little below the fornices, ovoid, 0.6 mm long. Pistil: style 0.3 mm long in flower, hidden by the nutlets, without distinct stigma. Nutlets ovate in outline, 2-2.5 mm long, 1.5 mm wide, with a flat dorsal disc, densely glochidiate in margin with confluent bases of glochids, glochids evenly distributed on disc.
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