Packera cymbalaria
Packera millefolium
dwarf arctic groundsel, dwarf arctic ragwort, northern butterweed
Piedmont ragwort
usually 1 (sometimes more, clustered), usually glabrous, sometimes bases and leaf axils tomentose.
1 or 2–3, clustered, glabrous or leaf axils sparsely hairy.
petiolate;
blades ovate to obovate, lyrate, or reniform, 10–30+ × 10–25+ mm, bases cuneate (sometimes tapering to winged petioles) to subcordate or contracted, margins crenate, dentate, or weakly lobed.
(and proximal cauline) petiolate;
blades narrowly ovate to ovate (2–3 times pinnately dissected, ultimate lobes mostly linear to filiform), 50–80 × 30–50 mm, bases ± truncate or auriculate, ultimate margins entire or remotely dentate.
abruptly reduced (sessile, not clasping; lanceolate, entire or pinnately lobed to pinnatisect).
gradually reduced (petiolate or sessile, similar to basals).
0 or relatively reduced (then densely tomentose).
bracteate or ebracteate, glabrous.
0 or 11–13;
corolla laminae (yellow, purple streaks in veins) 10–14+ mm.
8–10(–13);
corolla laminae 8–12 mm.
60–75+;
corolla tubes 2–2.5 mm, limbs 4–5 mm.
35–50+;
corolla tubes 2–3 mm, limbs 1.5–2.5 mm.
21, deep red or green (tips red), 6–8 mm, glabrous.
(13–)21, green, 4–6 mm, glabrous (tips sometimes hair-tufted).
conspicuous (bractlets cyanic).
0.
1–2.
10–30+ in open, corymbiform arrays.
1.5–2 mm, glabrous;
pappi 5–6 mm.
0.75–1.5 mm, hairy on ribs;
pappi 3–4 mm.
= 46, 92, 138.
Packera cymbalaria
Packera millefolium
Packera cymbalaria occurs in three, disjunct regions: western Alaska eastward into western N.W.T. and south into northwestern British Columbia; Newfoundland and the Gaspé Peninsula, Quebec; and Siberia. Considerable morphologic overlap exists between western and eastern populations in North America; western populations have slightly different flavonoid chemistries and chromosome numbers. Western populations are either diploid or tetraploid; eastern populations are hexaploid. The correct name for this species may prove to be Packera heterophylla (Fischer) E. Wiebe, based on Cineraria heterophylla Fischer.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Packera millefolia is known only from granitic soils in the southern Appalachians. It is similar in overall aspect to the widespread P. anonyma; it differs by its 2–3 times pinnately dissected leaves.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
BC
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
