Perityle microglossa
Perityle aglossa
short-Ray Rock daisy
bluff rock daisy, rayless rock daisy
petioles 8–23 mm;
blades ovate, subcordate, or subdeltate, 6–20 × 5–25 mm, margins irregularly lobed, laciniate, serrate-dentate, or shallowly 3-lobed.
10–25 mm.
campanulate.
0.
20–60;
corollas yellow, often pink or purple tinged, tubes 1–1.7 mm, throats tubular, 2.1–3.2 mm, lobes 0.4–0.6 mm.
14–24, linear to linear-lanceolate, (5–)6–10 × 0.5–1 mm, apices long-attenuate.
borne singly or (2–3) in corymbiform arrays, 8–11 × 4–8 mm.
oblong to narrowly oblanceolate, (1–)2–3.2 mm, margins prominently calloused, densely ciliate;
pappi of 1(–2) antrorsely barbellate bristles 3.5–6 mm plus crowns of hyaline, laciniate scales.
= 34.
Perityle microglossa
Perityle aglossa
Varieties 2 (1 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Perityle aglossa is consistently discoid and occurs in limestone crevices along and near the Rio Grande in Brewster and Terrell counties. A combination of subtle characteristics including shallower leaf lobing, narrower shape and more attenuate apices of the phyllaries, shorter cypselae, and proportionally longer pappus bristles distinguish these plants from the rayless ones of P. parryi.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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