Stems erect, much branched, 1-3 dm, densely scurfy; branches opposite, often purple-reddish, neither ribbed nor striate; internodes 5-15 mm. Leaves mostly opposite, sessile; blade ovate-triangular to broadly ovate, 2-4 × 1-3 mm, mostly cordate-clasping, densely scurfy on both sides. Flowers of both sexes intermixed in axillary glomerules, but sometimes staminate clustered toward apex. Fruiting bracteoles persistent, deltoid, 2.4-2.8 mm and wide, margin with 1-3 pairs of irregular teeth, proximalmost usually larger and retrorse, apex shortly acuminate, with 2 longitudinal rows of tubercles on 1 or both surfaces. Seeds dark brown.
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