Packera bolanderi
Packera eurycephala
Bolander's groundsel, Bolander's ragwort
cut-leaf butterweed, wide-head groundsel
1 or 2–3, loosely clustered, glabrous.
1 or, usually, multiple, clustered, densely tomentose to glabrescent.
(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.
(soon withering), petiolate;
blades lyrate (lateral lobes 2–6+ pairs), ovate, obovate, or spatulate, 70–100+ × 20–30+ mm, bases tapering, ultimate margins irregularly and coarsely serrate-dentate.
gradually reduced (petiolate or sessile and clasping; lanceolate, incised).
gradually reduced (± petiolate, proximal and mid similar to basal, terminal lobes smaller than laterals; distal sessile, incised).
ebracteate or inconspicuously bracteate, glabrous.
bracteate, sparsely to densely lanate-tomentose.
8 or 13;
corolla laminae 10–15+ mm.
8 or 13;
corolla laminae 10–15 mm.
30–45+;
corolla tubes 3–4 mm, limbs 3.5–4.5 mm.
35–50+;
corolla tubes 3.5–4.5 mm, limbs 2.5–3.5 mm.
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.
13 or 21, green (tips sometimes yellow), 8–10+ mm, densely tomentose proximally, glabrescent distally.
conspicuous.
inconspicuous (bractlets tomentose).
8–15+ in corymbiform or subumbelliform arrays.
5–20+ in open or compact (rarely), cymiform arrays.
2.5–3.5 mm, glabrous;
pappi 5–7 mm.
1–1.5 mm, glabrous;
pappi 6–7 mm.
= 46.
= 46.
Packera bolanderi
Packera eurycephala
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.)
Varieties 2 (2 in the flora).
(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 |
1. Stems (1–)2–6; leaf blades: margins usually serrate-dentate, sometimes deeply dissected, midribs winged | var. eurycephala |
1. Stems 1; leaf blades finely dissected, lateral lobes also dissected, midribs not or weakly winged | var. lewisrosei |
OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CA
