Distribution: Endemic to central Washington, Chelan to Yakima Counties.
Habitat: Often with sagebrush, desert valleys to low mountains.
Conservation Status: Sensitive in Washington (WANHP)
Fleshy perennials, the stems globose and depressed, single or in clumps, 7-12 cm. thick.
Plants leafless; stems covered with tubercles 12-25 mm. long, in 8-13 spiral rows; stems with 8-12. straight central spines 8-25 mm. long, and 10-30 smaller marginal spines.
Flowers solitary near the tip of a tubercle, 1.5-2 cm. long, red-violet to yellowish-green; sepals, petals and stamens numerous, all joined at the base; ovary inferior, 1-celled.
Fruit sub-globose, 6-8 mm. long.