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Fendler's ragwort, notchleaf groundsel

Oak Creek ragwort

Habit Perennials, 10–40+ cm; rhizomatous (rhizomes horizontal to suberect, branched). Perennials, 60–100+ cm; taprooted (caudices subligneous, ascending to erect).
Stems

1 or multiple (crowded to subcespitose), floccose-tomentose or glabrescent.

1 or 2–4, clustered (proximally deeply purple-tinged, distally lightly tinged), glabrous or tomentose at bases and in leaf axils.

Basal leaves

petiolate;

blades lanceolate to oblanceolate, 30–60+ × 10–30+ mm, bases tapering, margins shallowly, evenly pinnatifid to pinnatisect or wavy (adaxial faces floccose-tomentose or subglabrescent).

(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.

Cauline leaves

gradually reduced (sessile; lanceolate to oblanceolate, pinnatisect to wavy).

gradually reduced (petiolate or sessile; shallowly lobed, midribs ± winged, distals bractlike, dentate to incised).

Peduncles

bracteate, densely to irregularly floccose.

ebracteate, glabrous.

Ray florets

6–8+;

corolla laminae 5–7 mm.

(8–)13;

corolla laminae 6–10+ mm.

Disc florets

30–40+;

corolla tubes 2.5–3 mm, limbs, 2.5–3.5 mm.

60–70+;

corolla tubes 2–3 mm, limbs 3.5–4.5 mm.

Phyllaries

13, green, 5–7 mm, floccose proximally to glabrescent distally.

(13–)21, green (tips yellow), 5–7 mm, glabrous (tips sometimes hairy).

Calyculi

0 or inconspicuous (bractlets red-tinged).

inconspicuous.

Heads

6–25+ in open or compact, corymbiform arrays.

15–40+ in open, cymiform arrays.

Cypselae

2.5–3 mm, glabrous;

pappi 4–5 mm.

1.5–2 mm, glabrous or ± scabrellous;

pappi 5.5–6.5 mm.

2n

= 46.

= 92.

Packera fendleri

Packera quercetorum

Phenology Flowering late May–early Oct. Flowering mid Apr–early Jun.
Habitat Steep slopes, loose, dry rocky or gravelly soils, along streams, open forests, disturbed sites Rocky soils, open areas, scrub-oak and pinyon-pine forests, chaparral
Elevation 1600–3200 m (5200–10500 ft) 800–2200 m (2600–7200 ft)
Distribution
from FNA
CO; NM; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; NM
[WildflowerSearch map]
[BONAP county map]
Discussion

Packera fendleri is abundant, almost weedy in the southern Rocky Mountains. It thrives in a wide range of elevations and in a wide variety of habitats; flowering times vary. It frequently grows in close association with other species of Packera and may hybridize with them.

(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.)

Source FNA vol. 20, p. 587. FNA vol. 20, p. 598.
Parent taxa Asteraceae > tribe Senecioneae > Packera Asteraceae > tribe Senecioneae > Packera
Sibling taxa
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. 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. millefolium, P. millelobata, P. multilobata, P. musiniensis, P. neomexicana, P. obovata, P. ogotorukensis, P. pauciflora, P. paupercula, P. plattensis, P. porteri, P. pseudaurea, P. sanguisorboides, P. schweinitziana, P. spellenbergii, P. streptanthifolia, P. subnuda, P. tampicana, P. texensis, P. tomentosa, P. tridenticulata, P. werneriifolia
Synonyms Senecio fendleri, Senecio canovirens, Senecio fendleri var. molestus, Senecio nelsonii, Senecio rosulatus, Senecio salicinus Senecio quercetorum, Senecio macropus
Name authority (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) (Greene) C. Jeffrey: Kew Bull. 47: 101. (1992)
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