Plant: Annual; stem erect, 1.5-5 dm, glabrous or hairy and becoming glabrous Leaves: cauline, generally alternate, 2-7 cm, petioled; stipules minute, obscure; blade linear, hairy, becoming glabrous, tip acute to obtuse and abruptly pointed, margin entire INFLORESCENCE: 1 or few clustered at branch tips; involucre 1.5-2 mm, obconic, hairy; glands 1-3, ± 1.5 mm, round, cupped, lobes 5-7, curved over gland Flowers: Staminate flowers 23-36, generally in 5 clusters around pistillate flower; Pistillate flower: 1, central, stalked; ovary chambers 3, ovule 1 per chamber, styles 3, undivided Fruit: capsule, 4-5 mm, oblong, lobed, hairy; Seed 3.5-4 mm, flattened top to bottom, 4-angled, tubercled, white to gray Misc: Canyons, rocky slopes; < 100 m. References: J.C. Hickman, ed. The Jepson Manual. ASU specimens.