Packera bolanderi
Packera millefolium
Bolander's groundsel, Bolander's ragwort
Piedmont ragwort
1 or 2–3, loosely clustered, glabrous.
1 or 2–3, clustered, glabrous or leaf axils sparsely hairy.
(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.
(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.
gradually reduced (petiolate or sessile and clasping; lanceolate, incised).
gradually reduced (petiolate or sessile, similar to basals).
ebracteate or inconspicuously bracteate, glabrous.
bracteate or ebracteate, glabrous.
8 or 13;
corolla laminae 10–15+ mm.
8–10(–13);
corolla laminae 8–12 mm.
30–45+;
corolla tubes 3–4 mm, limbs 3.5–4.5 mm.
35–50+;
corolla tubes 2–3 mm, limbs 1.5–2.5 mm.
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.
(13–)21, green, 4–6 mm, glabrous (tips sometimes hair-tufted).
conspicuous.
0.
8–15+ in corymbiform or subumbelliform arrays.
10–30+ in open, corymbiform arrays.
2.5–3.5 mm, glabrous;
pappi 5–7 mm.
0.75–1.5 mm, hairy on ribs;
pappi 3–4 mm.
= 46.
Packera bolanderi
Packera millefolium
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.)
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.)
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
