Packera bolanderi
Packera anonyma
Bolander's groundsel, Bolander's ragwort
Small's ragwort
1 or 2–3, loosely clustered, glabrous.
1 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually 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 narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous).
gradually reduced (petiolate or sessile and clasping; lanceolate, incised).
gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid).
ebracteate or inconspicuously bracteate, glabrous.
bracteate, distally tomentose.
8 or 13;
corolla laminae 10–15+ mm.
8 or 13;
corolla laminae 5–7+ mm.
30–45+;
corolla tubes 3–4 mm, limbs 3.5–4.5 mm.
45–60+;
corolla tubes 1.5–2 mm, limbs 1.5–2 mm.
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.
13 or 21, light green, 3–5 mm, glabrous.
conspicuous.
inconspicuous.
8–15+ in corymbiform or subumbelliform arrays.
20–70(–100+) in corymbiform arrays.
2.5–3.5 mm, glabrous;
pappi 5–7 mm.
0.75–1 mm, hirsute on ribs;
pappi 2.5–3 mm.
= 46.
= 44.
Packera bolanderi
Packera anonyma
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 anonyma is common, almost weedy throughout most of its range. It grows on serpentine in Maryland, Ohio, and Pennsylvania. In western parts of its range, putative hybrids between P. anonyma and P. plattensis and P. tomentosa have been reported.
(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
LA Plants
MD Biodiversity
