Packera cynthioides
Packera sanguisorboides
White Mountain ragwort
burnet ragwort
1 or 2–3, clustered, densely lanate-tomentose or canescent, tufts of arachnoid tomentum in leaf axils, or glabrescent.
1 or 2–3, clustered, glabrous or leaf axils tomentose.
(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).
(and proximal cauline) petiolate;
blades broadly oblanceolate (pinnately lobed, lateral lobes 2–3+ pairs, their bases petioluliform, terminal lobes larger than laterals, ovate to reniform, midribs not winged), 60–120+ × 20–60 mm, bases contracted, ultimate margins crenate to crenate-dentate.
gradually reduced (sessile; lanceolate to oblanceolate, entire or wavy).
gradually reduced (petiolate or sessile; lyrate to sublyrate, midribs winged, terminal lobes weakly distinct, shallowly dentate).
0 (or relatively reduced, then densely tomentose).
inconspicuously bracteate, glabrous or tomentose proximally.
(5–)8;
corolla laminae 8–10+ mm.
8;
corolla laminae 6–12 mm.
35–45+;
corolla tubes 2.5–3.5 mm, limbs 3.5–4.5 mm.
35–50+;
corolla tubes 2.5–3.5 mm, limbs 2–3 mm.
(8–)13, green (tips red), 3–6 mm, densely tomentose proximally, glabrate distally.
13, bright green (tips light green to yellow), 4–7 mm, glabrous.
inconspicuous (bractlets red-tipped).
inconspicuous.
10–30+ in open or congested, cymiform arrays.
3–8+ in subumbelliform or compound, cymiform arrays (of 2–4+ cymiform clusters of 2–5+ heads each).
1–1.5 mm, glabrous;
pappi 5–6 mm.
1.5–2 mm, glabrous;
pappi 4.5–5.5 mm.
= 46.
= 46.
Packera cynthioides
Packera sanguisorboides
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.)
Packera sanguisorboides is known from the San Juan and Sangre de Cristo mountains of northern New Mexico, the Magdalena Mountains of western New Mexico, and the Sacramento Mountains of southern Lincoln and Otero counties. It may have affinities with P. coahuilensis Greenman.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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