Perityle tenella
Perityle congesta
Dixie or Springdale Rock daisy, Springdale rock-daisy
Grand Canyon rockdaisy, Kaibab or Grand Canyon 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 2.5–10(–15) mm (shorter than blades);
blades elliptic, lanceolate, or ovate, 5–17(–20) × 4–8(–10) mm, (bases cuneate) margins usually entire or with 2(–6) teeth.
4–25 mm.
3–17 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.
30–40;
corollas yellow, tubes 0.8–1 mm, throats tubular to subfunnelform, 1.2–1.5 mm, lobes 0.3–0.5 mm.
13–20, linear to narrowly or broadly lanceolate, 4–5(–6) × 0.8–1.3 mm.
12–16, narrowly lanceolate, oblong-lanceolate, or lanceolate, 3.2–4.5 × 0.8–1.4 mm.
borne singly or (2–10) in corymbiform arrays, 6–7 × 4–6 mm.
borne singly or (2–8) in corymbiform arrays, 5–6(–6.5) × 3.5–4.5(–5) 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.
narrowly oblanceolate, (2–)2.5–3 mm,margins thin-calloused, short-hairy;
pappi of 1–2 subequal or unequal bristles 2–2.7 mm.
= 32.
= 32.
Perityle tenella
Perityle congesta
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.
The leaf blades of Perityle congesta usually have a tooth on each margin, cuneate bases, and unobtrusive veins abaxially; those of P. tenella usually have serrate margins, truncate bases, and raised veins abaxially. Perityle congesta is found on both rims and extending into the Grand Canyon and northward almost to the Utah border. Available specimens suggest that P. congesta and P. tenella intergrade where their ranges overlap in northwestern Arizona on the Colorado Plateau. Specimens from the Colorado Plateau have intermediate leaf shapes and induments.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CalFlora
WildflowerSearch
iNaturalist
USDA Plants Database
