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21. Perityle inyoensis (Ferris) A. M. Powell, Sida. 3: 278. 1968.
Inyo rock daisy
Laphamia inyoensis Ferris, Contr. Dudley Herb. 5: 104, fig. 2. 1958
Perennials or subshrubs, 12–25 cm; pilose-villous indument intermixed with short glandular hairs. Leaves (opposite or alternate): petioles 5–20(–50) mm; blades orbiculate, ovate, or ovate-deltate, 8–18(–21) × 6–12(–15) mm, margins serrate to serrate-lobed. Heads borne singly or (2–3) in corymbiform arrays, 7–8.5(–9) × 5–7(–8) mm. Peduncles 8–40 mm. Involucres campanulate. Phyllaries 14–21, linear-lanceolate to sub-lanceolate, 5.5–6.5 × 1.1–1.5 mm. Ray florets 0. Disc florets 35–60; corollas yellow, tubes 1.4–1.6 mm, throats subtubular to subfunnelform, 2–2.4 mm, lobes 0.6–0.7 mm. Cypselae narrowly oblanceolate to suboblanceolate, (2.5–)3–3.5 mm, margins thin-calloused, short-hairy; pappi usually inconspicuous, callous crowns, rarely of minute scales. 2n = 36.
Flowering spring–fall. Dry, rocky slopes; of conservation concern; 1800–2800 m; Calif.
Perityle inyoensis occurs in the southern Inyo Mountains. It is allied to P. megalocephala, which occurs at intermediate and lower elevations to the north and east of P. inyoensis.
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