Perennials or subshrubs. Stems several from caudex, erect or ascending, (stiff, usually gyrose), 1-3 dm. Leaves (3-7 per stem); petiolate (1-2 cm); blade ovate to broadly so, (1-)1.5-4 cm × 10-35 mm, base obtuse, subtruncate, or cuneate, margins usually coarsely and irregularly dentate, rarely (distalmost) repand, apex obtuse or subacute. Racemes few-flowered, (lax in fruit). Fruiting pedicels divaricate or ascending, straight or slightly curved, 6-14 mm. Flowers: sepals purplish, 5-7 × 2-3 mm; petals white to lavender or purplish (with darker veins), 9-14 × 2.5-4 mm, attenuate to clawlike base; filaments 2-3 mm; anthers linear, 2-2.5 mm; gynophore obsolete to 0.5 mm. Fruits straight to strongly recurved, terete, (2-)3-5 cm × 1-1.2 mm; ovules 26-42 per ovary; style 0.7-1.5 mm; stigma flat, entire. Seeds 1.2-1.5 × 0.6-0.9 mm.

Flowering Apr-Jun. Rocky crevices, cliffs, limestone clefts; of conservation concern; 1500-2800 m; Calif.

Hesperidanthus jaegeri has been collected from Marble and Teufel canyons and Cerro Gordo Peak of the Inyo Mountains, Inyo County.