Pectis rusbyi
Rusby's chinchweed, Rusby's cinchweed
erect or ascending, glabrous or sparsely puberulent (in decurrent lines).
linear to narrowly elliptic, 10–50 × 1–5 mm, margins with 1–3 pairs of setae, faces glabrous or sparsely puberulent (dotted on margins with round oil-glands 0.2–0.7 mm).
20–80 mm.
campanulate.
8(–13);
corollas 5–11 mm.
(7–)20–55;
corollas 3.5–5 mm (2-lipped).
distinct, oblong or narrowly obovate, 4–7 × 1–2 mm (dotted with 0–2, subterminal oil-glands plus 2–4 pairs of inconspicuous, round to narrowly elliptic, submarginal oil-glands).
borne singly or in open, cymiform arrays.
3–4.5 mm, strigillose or short-pilose;
ray pappi of 1–4, antrorsely barbed awns 1–4 mm or coroniform;
disc pappi of 15–30, antrorsely barbed bristles 2.5–5 mm or coroniform.
= 24 (as P. palmeri).
Pectis rusbyi
Pectis rusbyi is much less common in Arizona than P. papposa var. papposa, with which it sometimes grows.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
WildflowerSearch
iNaturalist
USDA Plants Database
