Packera multilobata
Packera antennariifolia
lobeleaf groundsel
shale barren ragwort
1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose.
1 (sometimes from rosettes, rosettes sometimes clustered), 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 broadly lanceolate to elliptic or spatulate, 20–40+ × 10–20+ mm, bases tapering, margins entire or subentire to dentate distally (faces tomentose).
gradually reduced (sessile).
abruptly reduced (petiolate or sessile; narrowly lanceolate to sublyrate, sharply toothed to pinnatisect or entire).
conspicuously bracteate, glabrous or tomentose.
bracteate, densely lanate to sparsely tomentose.
8–13;
corolla laminae 7–10 mm.
8–10(–13);
corolla laminae 5–10 mm.
40–50+;
corolla tubes 4–5 mm, limbs 3–4 mm.
25–35+;
corolla tubes 3–4 mm, limbs 1.5–2 mm.
13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally).
13 or 21, green, 5–7 mm, densely tomentose (apices scarious).
conspicuous.
inconspicuous.
10–30+ in open, corymbiform or subumbelliform arrays.
6–12+ in corymbiform arrays (lateral cymiform arrays sometimes originating in leaf axils).
2–3 mm, glabrous or hirtellous on ribs;
pappi 5–6 mm.
1–1.5 mm, hirtellous on ribs;
pappi 4–5 mm.
= 46, 92.
= 46.
Packera multilobata
Packera antennariifolia
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 antennariifolia is known only from shale barrens or shale-derived soils in central Appalachia. Plants growing on steep slopes have stouter, more horizontal caudices and more extensive fibrous roots than specimens from other locations. Specimens from shale-derived soils, not growing directly on shale barrens, have weakly lobulate leaves and noticeably less hairiness.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
MD Biodiversity
