Plant: Plant 0.5-6 dm, taprooted, stellate-hairy; stem decumbent to erect, branched Leaves: opposite; petiole 1.5-12 cm; blade 0.5-3 cm, round-reniform, lobes 5-9, ± halfway to base, widely lanceolate to round, generally obtuse INFLORESCENCE: umbels simple, few-flowered, axillary, ± sessile; bracts lanceolate Flowers: many, small; calyx lobes minute; petals oblong-ovate, yellowish green, tip not narrowed, not incurved; stamens 5; pistil 1, ovary inferior, 2-chambered, generally with a ± conic, persistent projection or platform on top subtending 2 free styles Fruit: 2 dry, 1-seeded halves that separate from each other but generally remain attached for some time to a central axis, 1.5-2 mm, ovate to round, inflated, cylindric or ± 4-angled or slightly compressed front-to-back, stellate-hairy, prickly, or nearly glabrous; ribs obscure; fruit central axis not an obvious structure; Seed: face ± flat Misc: Shade of trees, rocks, shrubs; 20-1400 m. References: W.B. McDougal. Seed Plants of Northern Arizona. J.C. Hickman, ed. The Jepson Manual. A. Cronquist. An integrated system of classification of flowering plants. ASU specimens.