Packera bolanderi
Packera cymbalaria
Bolander's groundsel, Bolander's ragwort
dwarf arctic groundsel, dwarf arctic ragwort, northern butterweed
1 or 2–3, loosely clustered, glabrous.
usually 1 (sometimes more, clustered), usually glabrous, sometimes bases and leaf axils tomentose.
(and proximal cauline) petiolate;
blades ± orbiculate to oblong, or lyrate (lateral lobes 1–3 pairs, sinuses usually rounded, midribs usually winged), 50–120+ × 30–70+ mm, bases cordate to subcordate, margins shallowly to deeply incised.
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.
gradually reduced (petiolate or sessile and clasping; lanceolate, incised).
abruptly reduced (sessile, not clasping; lanceolate, entire or pinnately lobed to pinnatisect).
ebracteate or inconspicuously bracteate, glabrous.
0 or relatively reduced (then densely tomentose).
8 or 13;
corolla laminae 10–15+ mm.
0 or 11–13;
corolla laminae (yellow, purple streaks in veins) 10–14+ mm.
30–45+;
corolla tubes 3–4 mm, limbs 3.5–4.5 mm.
60–75+;
corolla tubes 2–2.5 mm, limbs 4–5 mm.
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.
21, deep red or green (tips red), 6–8 mm, glabrous.
conspicuous.
conspicuous (bractlets cyanic).
8–15+ in corymbiform or subumbelliform arrays.
1–2.
2.5–3.5 mm, glabrous;
pappi 5–7 mm.
1.5–2 mm, glabrous;
pappi 5–6 mm.
= 46.
= 46, 92, 138.
Packera bolanderi
Packera cymbalaria
Varieties 2 (2 in the flora).
The two varieties of Packera bolanderi have been treated as species. The morphologic characteristics used to distinguish the varieties vary widely within some populations. Presence or absence of multicellular hairs has been used to separate the varieties; that trait is also variable. The morphologic distinction is weak; habitat and elevation records lend support for recognizing two varieties.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
1. Basal leaves (relatively thick and turgid); phyllaries 13 or 21, 6–8+ mm, hairy proximally (hairs tan or brownish, multicelled) | var. bolanderi |
1. Basal leaves (relatively thin); phyllaries 8, 13, (or 21), 5–6 mm, glabrous | var. harfordii |
OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
BC
