2. Stanleya bipinnata Greene, Erythea 4: 173. 1896; S. pinnata (Pursh) Britton var. bipinnata (Greene) Rollins, Lloydia 2: 119. 1939. TYPE: United States, Wyoming, Rock Creek, 11 Jul 1896, E. L. Greene s.n. (holotype, NDG).

Stanleya pinnata var. gibberosa Rollins, Lloydia 2: 119. 1939. TYPE: United States, Wyoming, Uinta Co., limy foothills of Bridger Butte, 3 miles W of Fort Briger, 6500 ft, 24 Jun 1938, R. C. Rollins 2383 (holotype, GH!; isotypes, DS!, MO!, NY!, POM!, RM, UC!, US!, UTC).

     Herbs, perennial, sometimes woody at base, glaucous. Stems 1.5–4.5 dm, erect to ascending, simple or rarely few branched below, sparsely pubescent. Basal leaves withered by flowering; lower and middle cauline leaves fleshy; petiole 1.5–3 cm; leaf blade lanceolate to ovate in outline, 4–7.5(–9.5) cm, sparsely pubescent with crisped trichomes, pinnatifid or pinnatisect, lowermost often bipinnatifid, gradually reduced in size and less divided upwards. Racemes densely flowered, elongated in fruit; fruiting pedicels horizontal to divaricate-ascending, 5–10 mm, sparsely pubescent. Flowers: sepals linear, 6.5–10 mm, glabrous, reflexed to spreading; petals yellow-orange, 5–12 mm; blade oblong or narrowly so, 1.7–5 × 0.8–2 mm; claw nearly linear, distinctly wider at base, pubescent on the inside, 5–7 mm; median filaments 1–1.5 cm, glabrous; anthers linear, 3–4 mm. Fruit linear, 2.5–4.6 cm × 1.5–2 mm, terete, divaricate, tortuous, torulose; valves glabrous; gynophore 4–11 mm, sparsely to densely pubescent; style 0.02–0.4 mm; ovules and seeds 24–34 per fruit. Seeds brown, oblong, 2.2–2.6 × 0.9–1.2 mm. 2n = 28.

Flowering: Jun–Jul.

Habitat: loose shale, clay hills, open plains, gumbo swales, dry draws.

Elevation: 1800–2350 m.

Distribution: United States (NC Colorado, NE Utah, C and S Wyoming).