Grass-leaved rock goldenrod

Petradoria graminea Wooton & Standley, Contr. U.S. Natl. Herb. 16: 183. 1913; P. pumila subsp. graminea (Wooton & Standley) L. C. Anderson

Stems 10–25 cm. Leaf blades usually 1(–3)-nerved, linear to narrowly lanceolate, 30–90 × 1–2 mm. Heads 10–25. Involucres 5–8 × 1.3–2 mm. Phyllaries 11–15. Ray florets usually 1; corollas 5–7.5 mm, laminae 0.7–1.5 mm wide. Disc florets 2–3; corollas 4–5.8 mm, lobes 0.5–1 mm. 2n = 18.

Flowering mid summer–fall. Dry, open, rocky habitats; 1500–2500 m; Ariz., N.Mex., Utah.