Stems erect to ascending, sparsely branched, 2.5-5 dm, sparsely farinose. Leaves nonaromatic; petiole 0.5-1.3 cm; blade triangular to ovate or rhombic-ovate, 0.7-2.9 × 0.4-2.1 cm, apex apiculate, base broadly cuneate to truncate, subhastate with low, rounded or acutish lobes, margins entire above lobes, apex acute to obtuse, sparsely farinose abaxially. Inflorescences glomerules in paniculate spikes, 21-24 × 4-9 cm; glomerules maturing irregularly; bracts leaflike to linear. Flowers: perianth segments 5, distinct nearly to base; lobes ovate, 0.7-1 × 0.7-0.9 mm, apex obtuse, keeled, densely to sparsely farinose, partly covering seeds at maturity; stamens 5; stigmas 2, 0.2-0.3 mm. Achenes ovoid; pericarp adherent, black, honeycombed. Seeds lenticular or round, 1-1.3 mm diam., margins acute; seed coat coarsely honeycombed. Fruiting late summer-early fall. Moist soils, roadsides, pinelands, igneous rock; 1500-2500 m; Ariz., N.Mex., Tex.

Plant: Annual forb to 1 m; herbage usually densely farinose; stems often reddish Leaves: leaves alternate, petiolate, 3-8 cm, mostly rhombic, with one pair of short teeth Flowers: flowers very small, green Fruit: lenticular, horizontal, ~1.5 mm, wall surface honeycombed, free from seed. Notes: Calyx not closely investing the fruit. Pericarp adherent to the seed.Leaf surface moderately farinose or glabrous. References: Kearney & Peebles; Arizona Flora. ASU specimans.