Packera quercetorum
Packera sanguisorboides
Oak Creek ragwort
burnet ragwort
1 or 2–4, clustered (proximally deeply purple-tinged, distally lightly tinged), glabrous or tomentose at bases and in leaf axils.
1 or 2–3, clustered, glabrous or leaf axils tomentose.
(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.
(and proximal cauline) petiolate;
blades broadly oblanceolate (pinnately lobed, lateral lobes 2–3+ pairs, their bases petioluliform, terminal lobes larger than laterals, ovate to reniform, midribs not winged), 60–120+ × 20–60 mm, bases contracted, ultimate margins crenate to crenate-dentate.
gradually reduced (petiolate or sessile; shallowly lobed, midribs ± winged, distals bractlike, dentate to incised).
gradually reduced (petiolate or sessile; lyrate to sublyrate, midribs winged, terminal lobes weakly distinct, shallowly dentate).
ebracteate, glabrous.
inconspicuously bracteate, glabrous or tomentose proximally.
(8–)13;
corolla laminae 6–10+ mm.
8;
corolla laminae 6–12 mm.
60–70+;
corolla tubes 2–3 mm, limbs 3.5–4.5 mm.
35–50+;
corolla tubes 2.5–3.5 mm, limbs 2–3 mm.
(13–)21, green (tips yellow), 5–7 mm, glabrous (tips sometimes hairy).
13, bright green (tips light green to yellow), 4–7 mm, glabrous.
inconspicuous.
inconspicuous.
15–40+ in open, cymiform arrays.
3–8+ in subumbelliform or compound, cymiform arrays (of 2–4+ cymiform clusters of 2–5+ heads each).
1.5–2 mm, glabrous or ± scabrellous;
pappi 5.5–6.5 mm.
1.5–2 mm, glabrous;
pappi 4.5–5.5 mm.
= 92.
= 46.
Packera quercetorum
Packera sanguisorboides
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.)
Packera sanguisorboides is known from the San Juan and Sangre de Cristo mountains of northern New Mexico, the Magdalena Mountains of western New Mexico, and the Sacramento Mountains of southern Lincoln and Otero counties. It may have affinities with P. coahuilensis Greenman.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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