Packera schweinitziana
Packera multilobata
New England groundsel, Schweinitz's groundsel, Schweinitz's ragwort
lobeleaf groundsel
1, glabrous or leaf axils sparsely tomentose.
1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose.
(and proximal cauline) petiolate;
blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).
(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 (± sessile; lacerate to subcrenate).
gradually reduced (sessile).
bracteate, glabrous.
conspicuously bracteate, glabrous or tomentose.
8–13;
corolla laminae 4–7 mm.
8–13;
corolla laminae 7–10 mm.
50–70+;
corolla tubes 3.5–4 mm, limbs 3–3.5 mm.
40–50+;
corolla tubes 4–5 mm, limbs 3–4 mm.
13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.
13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally).
conspicuous.
conspicuous.
8–20+ in loose, corymbiform arrays.
10–30+ in open, corymbiform or subumbelliform arrays.
1–1.5 mm, glabrous;
pappi 5–5.5 mm.
2–3 mm, glabrous or hirtellous on ribs;
pappi 5–6 mm.
= 44.
= 46, 92.
Packera schweinitziana
Packera multilobata
Packera schweinitziana is rarely mistaken for any other taxon. It grows on slightly acidic soils and may reproduce vegetatively by branched rhizomes. The group of populations on Roan Mountain on the Tennessee-North Carolina border is disjunct from the main distribution.
(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.)
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