Description: Herbaceous short-lived perennial, to 120 cm (48 in.) tall. Stems thick. Leaves opposite, grayish, smooth, leathery, irregularly toothed; basal leaves petiolated; stem leaves sessile and clasping the stem. Inflorescence a raceme, strongly glandular pubescent. Flower sepals 5, fused; petals 5, bilateral, light creamy yellow, inflated above the basal portion. Sterile stamen longer than the petals, with long yellow hairs. Fruit a capsule with many black seeds. Time of flowering: April to June.
Habitat: Occurs in calcareous or carbonate soils in creosote-bursage, blackbrush, and mixed scrub communities. Found in active gravel washes, rock crevices, outcrops, or similar places receiving enhanced runoff. Elevations: 762 - 1,670 m (2,500 - 5,480 ft)
Range: Southern Nevada endemic. In Clark County, known from lower elevation areas in the Spring Mountains and the McCullough Range.
Comments: This species is similar to ssp. roseus, which has rosy petals rather than creamy yellow.