Packera eurycephala
Packera multilobata
cut-leaf butterweed, wide-head groundsel
lobeleaf groundsel
1 or, usually, multiple, clustered, densely tomentose to glabrescent.
1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose.
(soon withering), petiolate;
blades lyrate (lateral lobes 2–6+ pairs), ovate, obovate, or spatulate, 70–100+ × 20–30+ mm, bases tapering, ultimate margins irregularly and coarsely serrate-dentate.
(and proximal cauline) petiolate;
blades obovate, oblanceolate, spatulate, or lyrate to sublyrate (± pinnately lobed, lateral lobes 3–6 pairs, smaller than terminal lobes), 40–80+ × 10–30+ mm, bases tapering, ultimate margins incised to dentate.
gradually reduced (± petiolate, proximal and mid similar to basal, terminal lobes smaller than laterals; distal sessile, incised).
gradually reduced (sessile).
bracteate, sparsely to densely lanate-tomentose.
conspicuously bracteate, glabrous or tomentose.
8 or 13;
corolla laminae 10–15 mm.
8–13;
corolla laminae 7–10 mm.
35–50+;
corolla tubes 3.5–4.5 mm, limbs 2.5–3.5 mm.
40–50+;
corolla tubes 4–5 mm, limbs 3–4 mm.
13 or 21, green (tips sometimes yellow), 8–10+ mm, densely tomentose proximally, glabrescent distally.
13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally).
inconspicuous (bractlets tomentose).
conspicuous.
5–20+ in open or compact (rarely), cymiform arrays.
10–30+ in open, corymbiform or subumbelliform arrays.
1–1.5 mm, glabrous;
pappi 6–7 mm.
2–3 mm, glabrous or hirtellous on ribs;
pappi 5–6 mm.
= 46.
= 46, 92.
Packera eurycephala
Packera multilobata
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Packera multilobata is abundant and widespread west of the Continental Divide. Both morphology and habitat vary. In colder parts of its range, plants are shorter, caudices are better developed with clustered stems, and leaf lobes are larger. In desert-like habitats, basal leaves are narrower and more finely lobed, the tomentum is often persistent, and stems are usually single.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stems (1–)2–6; leaf blades: margins usually serrate-dentate, sometimes deeply dissected, midribs winged | var. eurycephala |
1. Stems 1; leaf blades finely dissected, lateral lobes also dissected, midribs not or weakly winged | var. lewisrosei |
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
SW CO Wildflowers
