Packera schweinitziana
Packera bolanderi
New England groundsel, Schweinitz's groundsel, Schweinitz's ragwort
Bolander's groundsel, Bolander's ragwort
1, glabrous or leaf axils sparsely tomentose.
1 or 2–3, loosely clustered, glabrous.
(and proximal cauline) petiolate;
blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).
(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.
gradually reduced (± sessile; lacerate to subcrenate).
gradually reduced (petiolate or sessile and clasping; lanceolate, incised).
bracteate, glabrous.
ebracteate or inconspicuously bracteate, glabrous.
8–13;
corolla laminae 4–7 mm.
8 or 13;
corolla laminae 10–15+ mm.
50–70+;
corolla tubes 3.5–4 mm, limbs 3–3.5 mm.
30–45+;
corolla tubes 3–4 mm, limbs 3.5–4.5 mm.
13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.
conspicuous.
conspicuous.
8–20+ in loose, corymbiform arrays.
8–15+ in corymbiform or subumbelliform arrays.
1–1.5 mm, glabrous;
pappi 5–5.5 mm.
2.5–3.5 mm, glabrous;
pappi 5–7 mm.
= 44.
= 46.
Packera schweinitziana
Packera bolanderi
Packera schweinitziana is rarely mistaken for any other taxon. It grows on slightly acidic soils and may reproduce vegetatively by branched rhizomes. The group of populations on Roan Mountain on the Tennessee-North Carolina border is disjunct from the main distribution.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
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 |
Go Botany
WildflowerSearch
iNaturalist
USDA Plants Database
OR
WA
CalFlora
Flora NW
PNW Herbaria
