Plants 0.2-0.7(-1) × 0.5-2 m. Leaves: petiole 2-5 mm; blade 0.1-1.5 × (0.4-)0.5-0.8(-1.3) cm. Inflorescences 1-4(-6) cm; bracts (2-)5-12(-17) mm. Peduncles (0.1-)2-6(-7) mm. Involucral bracts 1-2 × 0.4-0.6 mm. Flowers: perianth 1.8-4 mm; filaments 1-2 mm; anthers 0.2-0.3 mm. Achenes 2-3(-3.5) mm. 2n = 40.

Flowering Jun-Oct. Gravelly limestone talus slopes, saltbush communities; of conservation concern; 1200-2200 m; Calif.

Dedeckera eurekensis is known from small, disjunct populations along the western slope of the White Mountains from southern Mono County southward into the Last Chance Mountains of Inyo County.