Packera multilobata
Packera ogotorukensis
lobeleaf groundsel
Ogotoruk Creek butterweed, Ogotoruk Creek ragwort
1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose.
1 (often branched proximally, sometimes distally), sparsely to densely floccose-tomentose.
(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.
petiolate;
blades elliptic to oblanceolate or ovate, 20–80+ × 20–60+ mm, bases tapering, margins entire, crenate-serrate, or irregularly to pinnately lobed (abaxial faces white-tomentose, adaxials patchy tomentose to glabrate).
gradually reduced (sessile).
gradually to abruptly reduced (sessile; mids lanceolate to oblanceolate, irregularly serrate to pinnately lobed, distals bractlike).
conspicuously bracteate, glabrous or tomentose.
bracteate, ± tomentose.
8–13;
corolla laminae 7–10 mm.
10–13+;
corolla laminae 8–12+ mm.
40–50+;
corolla tubes 4–5 mm, limbs 3–4 mm.
60–70+;
corolla tubes 1–1.5 mm, limbs 2–2.5 mm.
13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally).
13 or 21, green (sometimes with purple streaks, tips usually purple), 4–8 mm, proximally tomentose, rarely glabrous.
conspicuous.
conspicuous (bractlets purple-tinged).
10–30+ in open, corymbiform or subumbelliform arrays.
1(–3).
2–3 mm, glabrous or hirtellous on ribs;
pappi 5–6 mm.
1–1.5 mm, glabrous;
pappi 2.5–3 mm.
= 46, 92.
= 92.
Packera multilobata
Packera ogotorukensis
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.)
Plants of Packera ogotorukensis have been treated as a disjunct of P. conterminus (as Senecio conterminus). Gross morphology, cytological data, and pollen morphology all provide good evidence for recognition of P. ogotorukensis as a distinct species.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
BC
