Packera bolanderi
Packera debilis
Bolander's groundsel, Bolander's ragwort
weak groundsel
1 or 2–3, loosely clustered, glabrous.
1 or 2–4, clustered, bases sparsely floccose-tomentose or glabrous, 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, turgid) petiolate;
blades elliptic to ovate or subreniform, 20–40+ × 15–30+ mm, bases cuneate to subcordate, margins subentire or crenate to crenate-dentate.
gradually reduced (petiolate or sessile and clasping; lanceolate, incised).
gradually reduced (sessile; pinnately lobed, sinuses deep, rounded, ultimate margins entire or subentire).
ebracteate or inconspicuously bracteate, glabrous.
ebracteate (or bractlets short), glabrous or sparsely hairy.
8 or 13;
corolla laminae 10–15+ mm.
0.
30–45+;
corolla tubes 3–4 mm, limbs 3.5–4.5 mm.
45–65+;
corolla tubes 3–4 mm, limbs 2–3 mm.
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.
13 or 21, green (tips cyanic), 6–8+ mm, glabrous.
conspicuous.
inconspicuous.
8–15+ in corymbiform or subumbelliform arrays.
6–20 in open or compact, corymbiform arrays.
2.5–3.5 mm, glabrous;
pappi 5–7 mm.
1–2 mm, glabrous;
pappi 4.5–5.5 mm.
= 46.
= 46.
Packera bolanderi
Packera debilis
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 debilis is the most abundant of the rayless species of Packera in the southern Rocky Mountains. It is infrequently collected, nearly always from wet, alkaline meadows. The lobing and subsucculent nature of the leaves may be related to the substrate; that has not been tested experimentally.
(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
