Packera schweinitziana
Packera indecora
New England groundsel, Schweinitz's groundsel, Schweinitz's ragwort
elegant groundsel, rayless mountain butterweed, rayless mountain groundsel, rayless mountain ragwort
1, glabrous or leaf axils sparsely tomentose.
1 or 2–3, loosely clustered, glabrous or glabrate.
(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).
petiolate;
blades elliptic-ovate, oblong, or subreniform, 20–50 × 10–40+ mm, bases subcordate, truncate, or cuneate, margins usually crenate-dentate to coarsely dentate-lacerate, seldom subentire.
gradually reduced (± sessile; lacerate to subcrenate).
gradually reduced (petiolate, resembling basals, sublyrate or dissected; distal sessile, subentire to pinnatifid).
bracteate, glabrous.
ebracteate (or bractlets inconspicuous), glabrous or glabrate.
8–13;
corolla laminae 4–7 mm.
0 or 8–10;
corolla laminae (deep yellow) 3–5 mm.
50–70+;
corolla tubes 3.5–4 mm, limbs 3–3.5 mm.
60–70+;
corolla tubes 2–3 mm, limbs 2.5–3.5 mm.
13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.
13 or 21, green (tips sometimes reddish), 7–9 mm, glabrous.
conspicuous.
conspicuous (bractlets green, tips sometimes reddish).
8–20+ in loose, corymbiform arrays.
8–20+ in subumbelliform arrays.
1–1.5 mm, glabrous;
pappi 5–5.5 mm.
1–2 mm, glabrous;
pappi 3–4 mm.
= 44.
= 46, 126, 176, 184.
Packera schweinitziana
Packera indecora
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.)
Packera indecora is found at relatively low elevations in eastern Canada and at middle to subalpine elevations in the western cordillera. It closely resembles P. pauciflora and it is often difficult to identify specimens in the herbarium. Biosystematic studies (J. F. Bain and J. Whitton 1994) have indicated that although they are morphologically similar, P. indecora and P. pauciflora have distinctly different physiologies and should be maintained as distinct taxa.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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