Packera multilobata
Packera quercetorum
lobeleaf groundsel
Oak Creek ragwort
1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose.
1 or 2–4, clustered (proximally deeply purple-tinged, distally lightly tinged), glabrous or tomentose at bases and in leaf axils.
(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.
(and proximal cauline) petiolate;
blades obovate or lyrate (pinnately lobed, lateral lobes 2–6+ pairs, their bases petioluliform, terminal lobes larger than laterals, midribs narrowly winged), 60–160+ × 20–40+ mm, bases wide, ultimate margins sharply dentate, crenate-dentate, or irregularly incised.
gradually reduced (sessile).
gradually reduced (petiolate or sessile; shallowly lobed, midribs ± winged, distals bractlike, dentate to incised).
conspicuously bracteate, glabrous or tomentose.
ebracteate, glabrous.
8–13;
corolla laminae 7–10 mm.
(8–)13;
corolla laminae 6–10+ mm.
40–50+;
corolla tubes 4–5 mm, limbs 3–4 mm.
60–70+;
corolla tubes 2–3 mm, limbs 3.5–4.5 mm.
13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally).
(13–)21, green (tips yellow), 5–7 mm, glabrous (tips sometimes hairy).
conspicuous.
inconspicuous.
10–30+ in open, corymbiform or subumbelliform arrays.
15–40+ in open, cymiform arrays.
2–3 mm, glabrous or hirtellous on ribs;
pappi 5–6 mm.
1.5–2 mm, glabrous or ± scabrellous;
pappi 5.5–6.5 mm.
= 46, 92.
= 92.
Packera multilobata
Packera quercetorum
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.)
Packera quercetorum is found only infrequently and in relatively small populations in central and southern Arizona and west-central New Mexico. The plants are robust and have probable affinities to P. multilobata. The plants have a bluish tinge when freshly collected and are distinctive in the field.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
