Packera cynthioides
White Mountain ragwort
1 or 2–3, clustered, densely lanate-tomentose or canescent, tufts of arachnoid tomentum in leaf axils, or glabrescent.
(thick, leathery) petiolate;
blades narrowly lanceolate or oblanceolate, 25–100+ × 5–20 mm, bases tapering, margins entire, subentire, dentate, or wavy (adaxial faces early glabrescent).
gradually reduced (sessile; lanceolate to oblanceolate, entire or wavy).
0 (or relatively reduced, then densely tomentose).
(5–)8;
corolla laminae 8–10+ mm.
35–45+;
corolla tubes 2.5–3.5 mm, limbs 3.5–4.5 mm.
(8–)13, green (tips red), 3–6 mm, densely tomentose proximally, glabrate distally.
inconspicuous (bractlets red-tipped).
10–30+ in open or congested, cymiform arrays.
1–1.5 mm, glabrous;
pappi 5–6 mm.
= 46.
Packera cynthioides
Packera cynthioides blooms later than other Packera species at the same latitudes. It is noted by collectors as usually growing on north- or west-facing slopes in limestone-derived soils. Its cauline leaves are well developed and held at a shallow angle to the stem, giving the plant a more “leafy” aspect than other members of the genus.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
WildflowerSearch
iNaturalist
USDA Plants Database
