Packera indecora
Packera ionophylla
elegant groundsel, rayless mountain butterweed, rayless mountain groundsel, rayless mountain ragwort
Tehachapi ragwort
1 or 2–3, loosely clustered, glabrous or glabrate.
usually 1, rarely 2–3, clustered, irregularly arachnoid-tomentose to lanate-tomentose or glabrescent.
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.
(and proximal cauline, relatively turgid) petiolate;
blades broadly ovate or lyrate (± pinnately lobed, lateral lobes 1–3 pairs, smaller than terminals), 10–30+ × 10–20+ mm, bases tapering to cuneate, ultimate margins subentire or crenate to coarsely dentate (abaxial faces tomentose).
gradually reduced (petiolate, resembling basals, sublyrate or dissected; distal sessile, subentire to pinnatifid).
gradually reduced (sessile; bractlike, entire).
ebracteate (or bractlets inconspicuous), glabrous or glabrate.
bracteate, irregularly tomentose.
0 or 8–10;
corolla laminae (deep yellow) 3–5 mm.
8–13;
corolla laminae 8–10 mm.
60–70+;
corolla tubes 2–3 mm, limbs 2.5–3.5 mm.
60–75+;
corolla tubes 2.5–4 mm, limbs 3.5–5 mm.
13 or 21, green (tips sometimes reddish), 7–9 mm, glabrous.
(8–)13 or 21, green, 7–10+ mm, densely tomentose proximally, glabrescent distally (tips hair-tufted).
conspicuous (bractlets green, tips sometimes reddish).
inconspicuous.
8–20+ in subumbelliform arrays.
3–6 in cymiform arrays.
1–2 mm, glabrous;
pappi 3–4 mm.
2–2.5 mm, glabrous;
pappi 5–7 mm.
= 46, 126, 176, 184.
= 46.
Packera indecora
Packera ionophylla
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.)
Of conservation concern.
Packera ionophylla is known only from the San Bernardino, San Gabriel, and Tehachapi mountains and a population on Alamo Mountain in eastern Ventura County.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
BC
CA
WA
Flora NW
MI Flora
MN Wildflowers
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
