Perityle megalocephala
Perityle villosa
bighead rockdaisy, large head rock daisy, limestone rockdaisy, Nevada Rock daisy
Hanaupah Rock daisy
petioles 1–6 mm;
blades usually elliptic, lanceolate, lance-ovate, ovate, or suborbiculate, sometimes linear, 4–8(–15) × 1–10(–12) mm, margins entire, irregularly and sparsely serrate, or serrate-lobed.
(all alternate): petioles 3–6 mm;
blades ovate and entire, or ovate-cuneate and 1–3-lobed, 3–16 × 4–10 mm, ultimate margins entire.
10–45(–80) mm.
10–20(–25) mm.
campanulate.
campanulate.
0.
0.
45–60;
corollas yellow, tubes 1–1.6 mm, throats tubular to subfunnelform, 1.6–2.2 mm, lobes 0.4–0.7 mm.
30–75;
corollas yellow, tubes 1–1.7 mm, throats 1.8–3 mm, tubular to subfunnelform, lobes 0.7–0.8 mm.
14–20, lanceolate to suboblanceolate, 5–6 × 1.3–1.9 mm.
13–23, linear-lanceolate to oblong-lanceolate, 4–7 × 1–1.5 mm.
borne singly or (2–3) in loose, corymbiform arrays, 6–9(–10) × 5–6(–8) mm.
borne singly or (2–3) in corymbiform arrays, 7.5–9.5 × 5–7 mm.
narrowly oblanceolate to suboblanceolate, 2.5–3 mm, margins thin-calloused, short-hairy;
pappi 0, or of single bristles.
linear to oblanceolate, 3–3.5 mm, margins thin-calloused, short-hairy;
pappi 0, or of 1–2, equal or unequal bristles 1–2 mm plus callous crowns.
= ca. 3x = 51.
Perityle megalocephala
Perityle villosa
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Perityle villosa occurs in the Inyo, Panamint, and Grapevine mountains in and near the Death Valley region. Two distinct morphotypes characterized by either entire or lobed leaves appear to exist in Hanaupah Canyon in the Panamint Mountains. Some chromosomal evidence suggests that the variability of P. villosa within that population may result from the co-occurrence there of diploids, triploids, and tetraploids.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaf blades ovate, lanceolate-ovate or elliptic to suborbiculate | var. megalocephala |
1. Leaf blades linear to lanceolate | var. oligophylla |
CA
WildflowerSearch
iNaturalist
USDA Plants Database
