Plant: Annual; stem ascending to prostrate, glabrous; sap milky Leaves: cauline, opposite, short-petioled, 5-28 mm; stipules separate, linear; blade linear, glabrous, tip acute to obtuse, margin entire INFLORESCENCE: flower-like, generally 1 per node; involucre 1.5-2 mm, bell-shaped, glabrous; glands 1-4, < 0.5 mm, oval; appendage narrower than gland, entire, white Flowers: Staminate flowers 40-55, 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 1/2 length Fruit: capsule, 2 mm, spheric, lobed, glabrous; Seed ± 2 mm, ovoid, 3-angled, smooth, brown to white Misc: Sand dunes; < 700 m; May-Jun