Perityle tenella
Perityle warnockii
Dixie or Springdale Rock daisy, Springdale rock-daisy
Warnock's Rock daisy
petioles 2–8 mm;
blades usually broadly deltate-ovate, sometimes subovate or subcordate, 5–18(–25) × 4–18(–20) mm, (bases truncate) margins usually ± serrate, rarely laciniate.
petioles 2–5(–8) mm;
blades lance-ovate, ovate, or suborbiculate, 6–10 × 4–8(–10) mm, margins serrate.
4–25 mm.
1–7 mm.
campanulate.
campanulate.
0.
0.
23–35(–48);
corollas yellow, tubes (1–)1.2–1.6 mm, throats tubular to narrowly funnelform, 1.2–1.6(–2.2) mm, lobes 0.3–0.7 mm.
9–12;
corollas bright white, tubes 0.6–1 mm, throats subfunnelform, 2–2.5 mm, lobes 1–1.6 mm.
13–20, linear to narrowly or broadly lanceolate, 4–5(–6) × 0.8–1.3 mm.
9–10, linear to lanceolate, 5–7 × 1.2–2.2 mm.
borne singly or (2–10) in corymbiform arrays, 6–7 × 4–6 mm.
borne singly (often partially obscured by leaves), 7–10 × 4–7 mm.
narrowly oblanceolate, 2.5–3.3 mm, margins obviously calloused, minutely hairy;
pappi 0 or of 1(–3) moderately stout bristles 2–2.8(–4.1) mm plus callous crowns.
oblong to oblanceolate, 2.2–2.8 mm, margins notably calloused, glabrous;
pappi callous crowns, bristles 0.
= 32.
= 34.
Perityle tenella
Perityle warnockii
Of conservation concern.
Similarities of Perityle tenella to P. congesta are discussed under the latter. Perityle tenella occurs in northwestern Arizona, southeastern Nevada, and southwestern Utah.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Perityle warnockii is known only from the type locality in Val Verde County. The relationship of P. warnockii to P. bisetosa is evidenced by its similar though often reduced vegetative and floral morphology. The two species may have been derived separately from a common ancestor, perhaps a white-flowered member of sect. Pappothrix such as P. vitreomontana.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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WildflowerSearch
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USDA Plants Database
