Torrey Bitterweed - Hymenoxys torreyana
Caudex branched, mat-forming. Stems simple, erect, scapose, 3–10 cm. Herbage punctate-glandular, villous on stem and leaf bases. Leaf blades narrowly oblanceolate, entire, 1–5, cm long. Heads solitary; involucres 7–11 mm high; phyllaries subequal, lanceolate to ovate, scarious-margined, glandular, villous. Ray ligules 7–11 mm long. Disk corollas 4–5 mm long, glandular. Achenes 3–4 mm long; pappus scales 5–7 (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Lesica (2012) treats this species in the genus Tetraneuris
Open ridges and meadows at low to high elevations in the mountains, often on limestone-derived soil in juniper woodlands, mountain mahogany woodland, and cushion plant grasslands.