Packera streptanthifolia
Packera sanguisorboides
cleft-leaf groundsel, Rocky Mountain butterweed, Rocky Mountain groundsel
burnet ragwort
1 or 2–5, clustered, usually glabrous, sometimes sparsely floccose-tomentose proximally and in leaf axils.
1 or 2–3, clustered, glabrous or leaf axils tomentose.
(and proximal cauline, relatively thick and turgid) petiolate;
blades spatulate to oblanceolate, or ovate to orbiculate, 20–40+ × 10–30+ mm, bases tapering to abruptly contracted or subcordate, margins entire, crenate, dentate, or weakly lobulate (faces usually glabrous, sometimes hairy).
(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 to abruptly reduced (± petiolate or sessile; entire or subentire).
gradually reduced (petiolate or sessile; lyrate to sublyrate, midribs winged, terminal lobes weakly distinct, shallowly dentate).
bracteate, glabrous or sparsely tomentose.
inconspicuously bracteate, glabrous or tomentose proximally.
8 or 13;
corolla laminae 5–10 mm.
8;
corolla laminae 6–12 mm.
35–60+;
corolla tubes 2–4 mm, limbs 2.5–4 mm.
35–50+;
corolla tubes 2.5–3.5 mm, limbs 2–3 mm.
(8–)13 or 21, green (tips sometimes cyanic), 4–7+ mm, glabrous.
13, bright green (tips light green to yellow), 4–7 mm, glabrous.
conspicuous.
inconspicuous.
2–20+ in loose, corymbiform or subumbelliform arrays.
3–8+ in subumbelliform or compound, cymiform arrays (of 2–4+ cymiform clusters of 2–5+ heads each).
1–2.5 mm, glabrous;
pappi 3–6 mm.
1.5–2 mm, glabrous;
pappi 4.5–5.5 mm.
= 46, 92.
= 46.
Packera streptanthifolia
Packera sanguisorboides
Packera streptanthifolia is widespread and variable throughout the Western Cordillera. It includes weakly defined phases that have been treated as distinct species or as varieties. Characteristics used to delimit those taxa often overlap and are difficult to score; some “phases” grade into each other. Northern populations are sometimes segregated as a distinct taxon (e.g., Senecio streptanthifolia var. borealis; J. F. Bain 1988).
(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.)
BC
OR
WA
CalFlora
Flora NW
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
