Perityle lemmonii

(A. Gray) J. F. Macbride

Contr. Gray Herb. 56: 39. 1918.

Common names: Lemmon’s rock daisy
Basionym: Laphamia lemmonii A. Gray Proc. Amer. Acad. Arts 16: 101. 1880 (as lemmoni)
Synonyms: Laphamia dissecta subsp. lemmonii (A. Gray) W. E. Niles
Treatment appears in FNA Volume 21. Treatment on page 331. Mentioned on page 324, 332, 334.

Perennials or subshrubs, 6–17(–23) cm (densely clumped, stems leafy); usually densely pilose to villous, sometimes glabrate. Leaves (opposite or alternate): petioles 3–8(–10) mm (usually shorter than blades); blades ovate to ovate-deltate (margins crenate, lacerate, laciniate, or serrate), or 3–5-lobed or pinnately divided (lobes crenate, lacerate, laciniate, lobed, or serrate), 6–18 × 7–20 mm. Heads borne singly or (2–3) in corymbiform arrays (often obscured by leaves), 7–10 × 5–9 mm. Peduncles 1–5(–10) mm. Involucres campanulate. Phyllaries 10–16, linear-lanceolate, lanceolate, to oblanceolate, 4–6.4(–8) × 1–1.7 mm (apices acute). Ray florets 0. Disc florets 20–40; corollas yellow, often tinged with purple, tubes 1–1.9 mm, throats broadly tubular to subfunnelform, 2–2.5(–2.9) mm, lobes 0.4–0.6 mm. Cypselae narrowly oblong to narrowly oblanceolate, 2.5–3.2(–3.6) mm, margins thin-calloused, short-hairy; pappi usually of 1(–2) delicate bristles 1–3(–4) mm, rarely plus vestigial, hyaline scales, sometimes 0. 2n = 34.

Phenology: Flowering spring–fall.
Habitat: Crevices of granitic boulders and cliffs
Elevation: 600–2300 m



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


Perityle lemmonii, which occurs in the mountain areas of southeastern Arizona and southwestern New Mexico, has variable leaf morphology that is often consistent within geographic populations. Its former inclusion within P. dissecta is discussed under that species.

Selected References


Lower Taxa

... more about "Perityle lemmonii"
Sharon C. Yarborough +  and A. Michael Powell +
(A. Gray) J. F. Macbride +
Laphamia lemmonii +
Lemmon’s rock daisy +
Ariz. +, N.Mex. +  and Mexico (Chihuahua). +
600–2300 m +
Crevices of granitic boulders and cliffs +
Flowering spring–fall. +
Contr. Gray Herb. +
Laphamia dissecta subsp. lemmonii +
Perityle lemmonii +
Perityle sect. Laphamia +
species +