Annual. Stems erect or ascending, 4-angled, simple or branched at the base, 1–5 cm. Leaves sessile, 5–20 mm long, linear; stipules glabrous, 2–5 mm long. Flowers 1–3 mm long, axillary and in a dense, terminal, bracteate raceme; bracts linear to ovate; pedicels 0–2 mm long; tepals white to rose with a green midrib. Achene 3-sided, 1–3 mm long, shiny or dull brown (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Flowering in July, fruiting in August.
Moist, sparsely vegetated soil, often around ponds in the valleys and montane zone.