Packera quercetorum
Packera neomexicana
Oak Creek ragwort
New Mexico groundsel
1 or 2–4, clustered (proximally deeply purple-tinged, distally lightly tinged), glabrous or tomentose at bases and in leaf axils.
1 or 2–5+, clustered, lanate- or arachno-tomentose or glabrescent.
(and proximal cauline) petiolate;
blades obovate or lyrate (pinnately lobed, lateral lobes 2–6+ pairs, their bases petioluliform, terminal lobes larger than laterals, midribs narrowly winged), 60–160+ × 20–40+ mm, bases wide, ultimate margins sharply dentate, crenate-dentate, or irregularly incised.
(often abaxially cyanic) petiolate (petioles hairy to glabrate);
blades ovate to lanceolate or narrowly lanceolate, 20–60+ × 10–30+ mm, bases abruptly contracted to tapering, margins subentire or denticulate to subserrate (abaxial faces usually tomentose, adaxials frequently glabrate).
gradually reduced (petiolate or sessile; shallowly lobed, midribs ± winged, distals bractlike, dentate to incised).
gradually or abruptly reduced (proximal petiolate, similar to basals; mids and distals sessile, lanceolate, entire).
ebracteate, glabrous.
conspicuously bracteate, usually hairy.
(8–)13;
corolla laminae 6–10+ mm.
(5–)8 or 13;
corolla laminae 4–10 mm.
60–70+;
corolla tubes 2–3 mm, limbs 3.5–4.5 mm.
40–60+;
corolla tubes 1.5–2.5 mm, limbs 3.5–4.5 mm.
(13–)21, green (tips yellow), 5–7 mm, glabrous (tips sometimes hairy).
13 or 21, green or yellowish, 4–7+ mm, tomentose to glabrescent.
inconspicuous.
conspicuous.
15–40+ in open, cymiform arrays.
3–20+ in open or compact, corymbiform to subumbelliform arrays (subtended by smaller arrays arising from leaf axils).
1.5–2 mm, glabrous or ± scabrellous;
pappi 5.5–6.5 mm.
1.5–2.5 mm, usually hirtellous on ribs, sometimes glabrous;
pappi 5–6+ mm.
= 92.
= 44, 46, 92.
Packera quercetorum
Packera neomexicana
Packera quercetorum is found only infrequently and in relatively small populations in central and southern Arizona and west-central New Mexico. The plants are robust and have probable affinities to P. multilobata. The plants have a bluish tinge when freshly collected and are distinctive in the field.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 3 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Plants loosely tomentose or glabrate; basal leaves: blades narrowly lanceolate, margins subentire or irregularly dentate | var. mutabilis |
1. Plants usually densely lanate or woolly tomentose, seldom glabrate; basal leaves: blades ovate or broadly lanceolate, margins dentate to deeply dentate or dissected | → 2 |
2. Plants taprooted; cauline leaves conspicuous | var. neomexicana |
2. Plants rhizomatous or fibrous-rooted; cauline leaves inconspicuous (bractlike) | var. toumeyi |
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