Packera breweri
Packera quercetorum
Brewer's ragwort
Oak Creek ragwort
1, glabrous or leaf axils tomentose.
1 or 2–4, clustered (proximally deeply purple-tinged, distally lightly tinged), glabrous or tomentose at bases and in leaf axils.
(and proximal cauline) petiolate;
blades spatulate to obovate (pinnately lobed, terminal lobes ovate to oblong, lateral lobes 2–6+ pairs, smaller, midribs narrowly winged), 100–300+ × 20–50(–80+) mm, bases contracted to tapering, ultimate margins crenate or dentate to lacerate (faces glabrous).
(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.
gradually reduced (petiolate or sessile; obovate, irregularly incised to subpinnate, terminal lobes narrow).
gradually reduced (petiolate or sessile; shallowly lobed, midribs ± winged, distals bractlike, dentate to incised).
usually ebracteate (rarely with 1–2 bractlets), glabrous.
ebracteate, glabrous.
8–10+;
corolla laminae 10–15+ mm.
(8–)13;
corolla laminae 6–10+ mm.
45–60+;
corolla tubes 3–3.5 mm, limbs 4–4.5 mm.
60–70+;
corolla tubes 2–3 mm, limbs 3.5–4.5 mm.
13 or 21, green, 7–9+ mm, glabrous.
(13–)21, green (tips yellow), 5–7 mm, glabrous (tips sometimes hairy).
inconspicuous.
inconspicuous.
15–50+ in corymbiform arrays.
15–40+ in open, cymiform arrays.
2–2.5 mm, glabrous;
pappi 6–7 mm.
1.5–2 mm, glabrous or ± scabrellous;
pappi 5.5–6.5 mm.
= 46.
= 92.
Packera breweri
Packera quercetorum
Packera breweri is known only from Coast Ranges from San Francisco Bay to Los Angeles County and along the eastern edges of the San Joaquin Valley. Populations are relatively small and sporadic; the plants appear not to hybridize with other species of Packera.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
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