Packera tomentosa
Packera indecora
woolly ragwort
elegant groundsel, rayless mountain butterweed, rayless mountain groundsel, rayless mountain ragwort
1, densely lanate-tomentose proximally, floccose-tomentose to glabrescent distally.
1 or 2–3, loosely clustered, glabrous or glabrate.
(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.
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 (± petiolate or sessile, weakly clasping; dentate to pinnately lobed).
gradually reduced (petiolate, resembling basals, sublyrate or dissected; distal sessile, subentire to pinnatifid).
bracteate, sparsely to densely tomentose.
ebracteate (or bractlets inconspicuous), glabrous or glabrate.
10 or 13;
corolla laminae 6–8+ mm.
0 or 8–10;
corolla laminae (deep yellow) 3–5 mm.
50–60+;
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, 5–8 mm, usually glabrous (sometimes hairy proximally).
13 or 21, green (tips sometimes reddish), 7–9 mm, glabrous.
inconspicuous.
conspicuous (bractlets green, tips sometimes reddish).
10–30+ in open, corymbiform arrays (more in robust individuals).
8–20+ in subumbelliform arrays.
1–1.5 mm, hispid;
pappi 5–7 mm.
1–2 mm, glabrous;
pappi 3–4 mm.
= 46.
= 46, 126, 176, 184.
Packera tomentosa
Packera indecora
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.)
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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