Plant: Prostrate annual forb branching from central point; herbage pubescent, with milky sap Leaves: cauline, opposite, inequilateral at base, with entire margins INFLORESCENCE: inflorescence (cyathium) urceolate; involucre < 1.5 mm, urn-shaped, hairy; gland < 0.5 mm, oblong, appendage wider than gland, 3-5-lobed, white Flowers: petaloid appendages white, deeply parted into attenuated segments; Staminate flowers 3-7, generally in 5 clusters around pistillate flower, each flower a stamen; Pistillate flower: 1, central, stalked; ovary chambers 3, ovule 1 per chamber, styles 3, divided to base Fruit: capsule, < 1.5 mm, spheric, pubescent; Seeds ± 1 mm, ovoid, white to brown, smooth Misc: Sandy places; < 1500 m.; Most of year Notes: Flowers borne of a cyanthia. Cyanthia with 3-5 petaloid appendages, about 1mm long. Each white, with red glands, and wider than the glands.Involucre about 1mm long. Staminate flowers 3-7, pistallate flowers 1.Plant armed with stinging hairs.Foliage pale green. Stems pubescentSeeds brownish and quadrangular. References: Kearney & Peebles; Arizona Flora. ASU specimans