Feddes Repert. Spec. Nov. Regni Veg. 52: 31. 1943.
Stems sprawling, 10–70 (–100) cm, glabrous or hairy proximally. Leaves: blade ovate to lanceolate, 6–50 × 2–15 mm, glabrous. Pedicels 30–100 mm. Flowers: calyx lobes equal or subequal, 3–4.5 mm; corolla yellow, 10–15 mm, mouth 3–3.5 mm diam., abaxial lobes reflexed, often purple near base, adaxial lobes projecting, golden yellow, palate yellow with maroon spots. Capsules often pendent, globular, 3–5 mm, puberulent, with 2, irregular pores. Seeds spotted with white, ovoid to subglobular, 1 mm, abaxial surface longitudinally ribbed. 2n = 30.
Phenology: Flowering Mar–May.
Habitat: Desert washes and shrublands.
Elevation: 60–2000 m.
Ariz., Calif., Nev., Utah, Mexico (Sonora)