Perityle ciliata |
Perityle fosteri |
|
---|---|---|
fringe rock daisy, hairy rock-daisy |
Foster's Rock daisy |
|
Habit | Subshrubs, 15–30 cm (in rock crevices, stems relatively many, erect to pendulous); sparsely to densely short-hairy, glandular. | Plants 6–15 cm (forming mats on rock faces, profusely branched, leafy); short-hairy. |
Leaves | petioles 2–15 mm; blades deltate-ovate to ovate-rhombic, 6–23 × 5–24 mm, margins usually entire or serrate to serrate-crenate, sometimes shallow-lobed. |
petioles 4–8 mm; blades ± ovate to deltate overall, 5–12 × 5–12 mm, 3-lobed, ultimate margins entire. |
Peduncles | 5–25 mm. |
2–5 mm. |
Involucres | campanulate. |
funnelform-cylindric. |
Ray florets | 6–10; corollas white, sometimes pink tinged, laminae broadly oblong to oblong-elliptic, 3–7 × 1.5–3 mm. |
|
Disc florets | 30–40; corollas yellow, often purple tinged, tubes 0.8–1 mm, throats tubular to tubular-funnelform, 1.2–1.4 mm, lobes 0.3–0.4 mm. |
ca. 10; corollas cream to pale yellow, tubes 1 mm, throats tubular-funnelform, 3 mm, lobes 0.5 mm. |
Phyllaries | 13–20, linear-lanceolate to narrow-ovate, 4–5.5 × 1–2 mm. |
ca. 8, linear-lanceolate, 5–6 × 0.8–1.3 mm. |
Heads | in corymbiform arrays, 5–7 × 5.5–7 mm. |
borne singly or in corymbiform arrays, 6–7 × ca. 4 mm. |
Cypselae | linear-oblong to oblanceolate, 2–2.8 mm, margins prominently calloused, long-ciliate; pappi of 2(–3+) barbellulate bristles 1.5–2.5 mm plus crowns of hyaline, laciniate scales. |
1.5–1.6 mm; pappi of ca. 20 bristles 1–2 mm. |
2n | = 34. |
= 34. |
Perityle ciliata |
Perityle fosteri |
|
Phenology | Flowering spring–fall. | Flowering spring–fall. |
Habitat | In rock crevices | Rock faces in protected canyons |
Elevation | 1100–2500 m (3600–8200 ft) | 1500–1660 m (4900–5400 ft) |
Distribution |
AZ
|
TX |
Discussion | Perityle ciliata is found only in the mountains of central Arizona in Apache, Coconino, Gila, Mohave, and Yavapai counties. It appears to be most closely related to P. coronopifolia. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Perityle fosteri, possibly a close relative of P. rupestris, is known only from Culberson County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 21, p. 322. | FNA vol. 21, p. 319. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Peritylinae > Perityle > sect. Perityle | Asteraceae > tribe Heliantheae > subtribe Peritylinae > Perityle > sect. Pappothrix |
Sibling taxa | ||
Synonyms | Laphamia ciliata | |
Name authority | (L. H. Dewey) Rydberg: in N. L. Britton et al., N. Amer. Fl. 34: 17. (1914) | A. M. Powell: Madroño 30: 217, fig. 1. (1983) |
Web links |