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Brewer's ragwort

Piedmont ragwort

Habit Perennials or biennials, 40–100+ cm; fibrous-rooted (caudices erect, stout). Perennials, 25–60+ cm; fibrous-rooted (caudices branched).
Stems

1, glabrous or leaf axils tomentose.

1 or 2–3, clustered, glabrous or leaf axils sparsely hairy.

Basal leaves

(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 narrowly ovate to ovate (2–3 times pinnately dissected, ultimate lobes mostly linear to filiform), 50–80 × 30–50 mm, bases ± truncate or auriculate, ultimate margins entire or remotely dentate.

Cauline leaves

gradually reduced (petiolate or sessile; obovate, irregularly incised to subpinnate, terminal lobes narrow).

gradually reduced (petiolate or sessile, similar to basals).

Peduncles

usually ebracteate (rarely with 1–2 bractlets), glabrous.

bracteate or ebracteate, glabrous.

Ray florets

8–10+;

corolla laminae 10–15+ mm.

8–10(–13);

corolla laminae 8–12 mm.

Disc florets

45–60+;

corolla tubes 3–3.5 mm, limbs 4–4.5 mm.

35–50+;

corolla tubes 2–3 mm, limbs 1.5–2.5 mm.

Phyllaries

13 or 21, green, 7–9+ mm, glabrous.

(13–)21, green, 4–6 mm, glabrous (tips sometimes hair-tufted).

Calyculi

inconspicuous.

0.

Heads

15–50+ in corymbiform arrays.

10–30+ in open, corymbiform arrays.

Cypselae

2–2.5 mm, glabrous;

pappi 6–7 mm.

0.75–1.5 mm, hairy on ribs;

pappi 3–4 mm.

2n

= 46.

Packera breweri

Packera millefolium

Phenology Flowering mid Apr–late May. Flowering early May–mid Jun.
Habitat Dry, rocky soils, partially shaded or protected areas, grasslands, oak savannas, roadsides, disturbed areas Open areas along streams, rock outcrops in thin, granitic-derived soils
Elevation 200–1500 m (700–4900 ft) 400–900 m (1300–3000 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
GA; NC; SC; VA
[BONAP county map]
Discussion

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.)

Of conservation concern.

Packera millefolia is known only from granitic soils in the southern Appalachians. It is similar in overall aspect to the widespread P. anonyma; it differs by its 2–3 times pinnately dissected leaves.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 20, p. 580. FNA vol. 20, p. 591.
Parent taxa Asteraceae > tribe Senecioneae > Packera Asteraceae > tribe Senecioneae > Packera
Sibling taxa
P. anonyma, P. antennariifolia, P. aurea, P. bernardina, P. bolanderi, P. cana, P. cardamine, P. castoreus, P. clevelandii, P. contermina, P. crocata, P. cymbalaria, P. cynthioides, P. debilis, P. dimorphophylla, P. eurycephala, P. fendleri, P. flettii, P. franciscana, P. ganderi, P. glabella, P. greenei, P. hartiana, P. hesperia, P. hyperborealis, P. indecora, P. ionophylla, P. layneae, P. macounii, P. malmstenii, P. millefolium, P. millelobata, P. multilobata, P. musiniensis, P. neomexicana, P. obovata, P. ogotorukensis, P. pauciflora, P. paupercula, P. plattensis, P. porteri, P. pseudaurea, P. quercetorum, P. sanguisorboides, P. schweinitziana, P. spellenbergii, P. streptanthifolia, P. subnuda, P. tampicana, P. texensis, P. tomentosa, P. tridenticulata, P. werneriifolia
P. anonyma, P. antennariifolia, P. aurea, P. bernardina, P. bolanderi, P. breweri, P. cana, P. cardamine, P. castoreus, P. clevelandii, P. contermina, P. crocata, P. cymbalaria, P. cynthioides, P. debilis, P. dimorphophylla, P. eurycephala, P. fendleri, P. flettii, P. franciscana, P. ganderi, P. glabella, P. greenei, P. hartiana, P. hesperia, P. hyperborealis, P. indecora, P. ionophylla, P. layneae, P. macounii, P. malmstenii, P. millelobata, P. multilobata, P. musiniensis, P. neomexicana, P. obovata, P. ogotorukensis, P. pauciflora, P. paupercula, P. plattensis, P. porteri, P. pseudaurea, P. quercetorum, P. sanguisorboides, P. schweinitziana, P. spellenbergii, P. streptanthifolia, P. subnuda, P. tampicana, P. texensis, P. tomentosa, P. tridenticulata, P. werneriifolia
Synonyms Senecio breweri Senecio millefolium, Senecio memmingeri
Name authority (Burtt Davy) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) (Torrey & A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981)
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