Dixie or Springdale rock daisy

Laphamia palmeri A. Gray var. tenella M. E. Jones, Proc. Calif. Acad. Sci., ser. 2, 5: 703. 1895; L. palmeri A. Gray 1878, not Perityle palmeri S. Watson 1889

Perennials or subshrubs, (5–)15–30(–35) cm (stems erect to pendulous often densely leafy); usually densely short-hairy. Leaves: petioles 2–8 mm; blades usually broadly deltate-ovate, sometimes subovate or subcordate, 5–18(–25) × 4–18(–20) mm, (bases truncate) margins usually ± serrate, rarely laciniate. Heads borne singly or (2–10) in corymbiform arrays, 6–7 × 4–6 mm. Peduncles 4–25 mm. Involucres campanulate. Phyllaries 13–20, linear to narrowly or broadly lanceolate, 4–5(–6) × 0.8–1.3 mm. Ray florets 0. Disc florets 23–35(–48); corollas yellow, tubes (1–)1.2–1.6 mm, throats tubular to narrowly funnelform, 1.2–1.6(–2.2) mm, lobes 0.3–0.7 mm. Cypselae narrowly oblanceolate, 2.5–3.3 mm, margins obviously calloused, minutely hairy; pappi 0 or of 1(–3) moderately stout bristles 2–2.8(–4.1) mm plus callous crowns. 2n = 32.

Flowering spring–fall. Rocky slopes or crevices in limestone or sandstone rock faces; of conservation concern; 600–2700 m; Ariz., Nev., Utah.

Similarities of Perityle tenella to P. congesta are discussed under the latter. Perityle tenella occurs in northwestern Arizona, southeastern Nevada, and southwestern Utah.