Perityle coronopifolia

A. Gray

Smithsonian Contr. Knowl. 5(6): 82. 1853.

Common names: Crow-foot rock daisy
Synonyms: Laphamia coronopifolia (A. Gray) Hemsley
Treatment appears in FNA Volume 21. Treatment on page 322. Mentioned on page 321.

Subshrubs, 6–36 cm (in rock crevices, stems relatively many, erect or pendulous, very leafy); sparsely to densely grayish hairy. Leaves: petioles 2–8(–12) mm; blades pedately 3-lobed (lobes spatulate or linear), or 2–3-pinnatifid (lobes linear-filiform), 4–30 × 4–20 mm, ultimate margins entire. Heads (2–5) in corymbiform arrays, 5–6.5 × 5–6 mm. Peduncles 7–15 mm. Involucres campanulate. Phyllaries 2–16, linear-lanceolate to narrow-ovate, 3.5–5 × 0.5–1.5 mm. Ray florets 8–12; corollas white, laminae broadly oblong or oblong-elliptic to subspatulate, 3–7 × 2–3 mm. Disc florets 30–40; corollas yellow, often purple tinged, tubes 0.8–1 mm, throats tubular, tubular-funnelform, or tubular-campanulate, 1–1.3 mm, lobes 0.3–0.4 mm. Cypselae linear-oblong to narrowly oblanceolate, 1.8–2.5 mm, margins usually prominently calloused, sometimes thin, usually ciliate; pappi of 2(–3+) barbellulate bristles 1.5–2.5 mm plus crowns of hyaline, laciniate scales. 2n = 34.

Phenology: Flowering spring–fall.
Habitat: Rock and cliff faces
Elevation: 1000–2600 m



Ariz., N.Mex., Mexico (Chihuahua).


Perityle coronopifolia is widespread in south-central and southeastern Arizona, and southwestern and south-central New Mexico. The combination of white rays, often pinnatifid leaves, and perennial habit distinguish it.

Selected References


Lower Taxa