Packera bolanderi
Packera contermina
Bolander's groundsel, Bolander's ragwort
dwarf arctic butterweed, high alpine butterweed, northwestern groundsel
1 or 2–3, loosely clustered, glabrous.
1 or 2–3, clustered, bases floccose-tomentose, leaf axils tomentose, glabrous elsewhere.
(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.
(thick, fleshy) petiolate;
blades usually ovate, oblong, or spatulate, sometimes sublyrate, 20–50+ × 20–40+ mm, bases tapering (to winged petioles) or abruptly contracted to subcordate (petioles narrow), margins crenate, coarsely serrate, or subentire.
gradually reduced (petiolate or sessile and clasping; lanceolate, incised).
(often cyanic) gradually reduced (sessile, not clasping; lanceolate to linear, usually irregularly and shallowly lobed, rarely entire).
ebracteate or inconspicuously bracteate, glabrous.
conspicuously bracteate, glabrous.
8 or 13;
corolla laminae 10–15+ mm.
10–12;
corolla laminae 8–14+ mm.
30–45+;
corolla tubes 3–4 mm, limbs 3.5–4.5 mm.
55–75+;
corolla tubes 2.5–3.5 mm, limbs 3–4 mm.
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.
21, deep red or green (tips reddish), 8–12+ mm, white-tomentose proximally.
conspicuous.
conspicuous (tips of bractlets often purple).
8–15+ in corymbiform or subumbelliform arrays.
1–2(–5+).
2.5–3.5 mm, glabrous;
pappi 5–7 mm.
1–1.25 mm, glabrous;
pappi 4–7 mm.
= 46.
= 160+.
Packera bolanderi
Packera contermina
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 contermina grows in rocky areas and produces relatively short rhizomes and abundant thin fibrous roots. In mesic sites, the rhizomes are more robust and the fibrous roots are fewer. This taxon has been treated as part of P. cymbalaria or P. subnuda. Morphologic and cytologic data lend support to its recognition at species rank.
(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
CalFlora
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
BC
