Plants 6-60 cm. Leaves: blades 15-100 × 1-3 mm. Involucres urceolate or globose, (3-)4-5 mm. Ray florets 5-12; laminae 4-10 mm. Disc florets 16-65. 2n = 16.

Flowering Apr-Jul. Grassy slopes, openings in woodlands and forests; 400-1100(-1600) m; Calif.

Jensia rammii occurs in the western foothills and ponderosa-pine belt of the northern Sierra Nevada, often in clayey soils.