Herb to 30 cm tall. Stems smooth, pilose. Leaves opposite, widely spaced, sessile, ovate, sparsely pilose; lamina 15–22 mm long; margins thickened, hyaline, with 10–12 coarse teeth. Bracts alternate, lanceolate, 2.5–3 mm long, green, margins entire, thickened and hyaline; bracteoles digitate, 0.3 mm diam., yellow-brown. Flowers 4-merous; pedicel 0.8 mm long. Sepals lanceolate, 1 mm long, green; margins thickened, hyaline; basal callus. Petals 2.5 mm long, green to deep red. Stamens 8; anthers 1.8 mm long. Ovary 8-ribbed with 2 oblique calluses between each pair of ribs, shiny, deep reddish purple, ribs and calluses silver-grey. Fruit urceolate, 2 mm long including sepals, silver-grey.
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