Packera bolanderi
Packera breweri
Bolander's groundsel, Bolander's ragwort
Brewer's ragwort
1 or 2–3, loosely clustered, glabrous.
1, glabrous or leaf axils 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.
(and proximal cauline) petiolate;
blades spatulate to obovate (pinnately lobed, terminal lobes ovate to oblong, lateral lobes 2–6+ pairs, smaller, midribs narrowly winged), 100–300+ × 20–50(–80+) mm, bases contracted to tapering, ultimate margins crenate or dentate to lacerate (faces glabrous).
gradually reduced (petiolate or sessile and clasping; lanceolate, incised).
gradually reduced (petiolate or sessile; obovate, irregularly incised to subpinnate, terminal lobes narrow).
ebracteate or inconspicuously bracteate, glabrous.
usually ebracteate (rarely with 1–2 bractlets), glabrous.
8 or 13;
corolla laminae 10–15+ mm.
8–10+;
corolla laminae 10–15+ mm.
30–45+;
corolla tubes 3–4 mm, limbs 3.5–4.5 mm.
45–60+;
corolla tubes 3–3.5 mm, limbs 4–4.5 mm.
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.
13 or 21, green, 7–9+ mm, glabrous.
conspicuous.
inconspicuous.
8–15+ in corymbiform or subumbelliform arrays.
15–50+ in corymbiform arrays.
2.5–3.5 mm, glabrous;
pappi 5–7 mm.
2–2.5 mm, glabrous;
pappi 6–7 mm.
= 46.
= 46.
Packera bolanderi
Packera breweri
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 breweri is known only from Coast Ranges from San Francisco Bay to Los Angeles County and along the eastern edges of the San Joaquin Valley. Populations are relatively small and sporadic; the plants appear not to hybridize with other species of Packera.
(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
