Packera bolanderi
Packera tomentosa
Bolander's groundsel, Bolander's ragwort
woolly ragwort
1 or 2–3, loosely clustered, glabrous.
1, densely lanate-tomentose proximally, floccose-tomentose to glabrescent distally.
(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 lanceolate to narrowly ovate or elliptic, 40–120+ × 20–50+ mm, bases tapering, sometimes oblique, margins subentire, crenate, or serrate-dentate.
gradually reduced (petiolate or sessile and clasping; lanceolate, incised).
gradually reduced (± petiolate or sessile, weakly clasping; dentate to pinnately lobed).
ebracteate or inconspicuously bracteate, glabrous.
bracteate, sparsely to densely tomentose.
8 or 13;
corolla laminae 10–15+ mm.
10 or 13;
corolla laminae 6–8+ mm.
30–45+;
corolla tubes 3–4 mm, limbs 3.5–4.5 mm.
50–60+;
corolla tubes 3.5–4 mm, limbs 3–3.5 mm.
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.
13 or 21, light green, 5–8 mm, usually glabrous (sometimes hairy proximally).
conspicuous.
inconspicuous.
8–15+ in corymbiform or subumbelliform arrays.
10–30+ in open, corymbiform arrays (more in robust individuals).
2.5–3.5 mm, glabrous;
pappi 5–7 mm.
1–1.5 mm, hispid;
pappi 5–7 mm.
= 46.
= 46.
Packera bolanderi
Packera tomentosa
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 tomentosa is common throughout most of its range. The basal and proximal cauline leaves are held at about 45 degrees to the stems.
(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
LA Plants
MD Biodiversity
