Packera sanguisorboides
Packera paupercula
burnet ragwort
balsam groundsel, Canadian butterweed
1 or 2–3, clustered, glabrous or leaf axils tomentose.
1 or 2–4, loosely clustered, glabrous or sparsely tomentose proximally.
(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.
petiolate;
blades lanceolate to narrowly elliptic or oblanceolate, 30–60+ × 10–20+ mm, bases tapering, sometimes obtuse, margins subentire to dentate or serrate.
gradually reduced (petiolate or sessile; lyrate to sublyrate, midribs winged, terminal lobes weakly distinct, shallowly dentate).
gradually reduced (proximals petiolate, sublyrate; mids sessile, not clasping, lanceolate, dissected, incised, or lacerate; distals sessile, bractlike).
inconspicuously bracteate, glabrous or tomentose proximally.
usually bracteate, sometimes ebracteate, glabrous.
8;
corolla laminae 6–12 mm.
0, 8, or 13;
corolla laminae (pale yellow) 5–10+ mm.
35–50+;
corolla tubes 2.5–3.5 mm, limbs 2–3 mm.
50–65+;
corolla tubes 2–3 mm, limbs 2–3 mm.
13, bright green (tips light green to yellow), 4–7 mm, glabrous.
13 or 21, green, 5–8+ mm, glabrous.
inconspicuous.
inconspicuous.
3–8+ in subumbelliform or compound, cymiform arrays (of 2–4+ cymiform clusters of 2–5+ heads each).
2–10+ in loose or compact, corymbiform arrays.
1.5–2 mm, glabrous;
pappi 4.5–5.5 mm.
1–2 mm, usually glabrous, sometimes hispidulous on ribs;
pappi 3.5–4.5 mm.
= 46.
= 44, 46, 92.
Packera sanguisorboides
Packera paupercula
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.)
Ecologically and morphologically, Packera paupercula is the most variable species of the genus in North America. Some “phases” have been treated as separate species, subspecies, varieties, forms, and races. Variation within P. paupercula hints at some interesting evolutionary relationships; characteristics used to separate taxa overlap. Much of the morphologic variation in this species may be due to hybridization and introgression. I do not recognize any of the infraspecific taxa that have been proposed.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
- Local floras:
BC, 
WA - Local Web sites:
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IL Wildflowers, 
MD Biodiversity, 
MI Flora, 
MN Wildflowers, 
PNW Herbaria 
WildflowerSearch
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USDA Plants Database- LBJ Wildflower Center
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