Annuals. Stems unbranched or branched distally, 1.5-4(-6) dm, densely to moderately hirsute-hispidulous basally, trichomes simple, to 3.5 mm, mixed with fewer, branched ones, (gla-brescent distally). Basal leaves persistent after anthesis (into fruiting). Cauline leaves: blade lanceolate to oblong, (1-)2-6(-9) cm × 2-10(-20) mm, base sagittate or minutely auriculate, margins entire or irregularly denticulate, (often subciliate), apex acute, surfaces pubescent, trichomes primarily simple. Fruiting pedicels ascending to divaricate, 7-10(-14) mm. Flowers: sepals (2.7-)3-4(-4.5) × 0.5-1 mm; petals white or creamy white, (5-)6-8(-9) × 1.5-2 mm; filaments 2-3.5 mm; anthers ca. 0.5 mm. Fruits pyriform to obovoid, 5-7 × 3.5-5 mm, apex acute; valves each obscurely veined, margin narrowly winged; style 2-3 mm. Seeds brown, 1.2-1.5 × 0.5-0.6 mm. 2n = 12, 26.
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