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Fendler's ragwort, notchleaf groundsel

dwarf arctic butterweed, high alpine butterweed, northwestern groundsel

Habit Perennials, 10–40+ cm; rhizomatous (rhizomes horizontal to suberect, branched). Perennials, 4–10+ cm; rhizomatous and/or fibrous-rooted (mat-forming, bases ascending to erect, coarse).
Stems

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

1 or 2–3, clustered, bases floccose-tomentose, leaf axils tomentose, glabrous elsewhere.

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).

(thick, fleshy) petiolate;

blades usually ovate, oblong, or spatulate, sometimes sublyrate, 20–50+ × 20–40+ mm, bases tapering (to winged petioles) or abruptly contracted to subcordate (petioles narrow), margins crenate, coarsely serrate, or subentire.

Cauline leaves

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

(often cyanic) gradually reduced (sessile, not clasping; lanceolate to linear, usually irregularly and shallowly lobed, rarely entire).

Peduncles

bracteate, densely to irregularly floccose.

conspicuously bracteate, glabrous.

Ray florets

6–8+;

corolla laminae 5–7 mm.

10–12;

corolla laminae 8–14+ mm.

Disc florets

30–40+;

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

55–75+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

Phyllaries

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

21, deep red or green (tips reddish), 8–12+ mm, white-tomentose proximally.

Calyculi

0 or inconspicuous (bractlets red-tinged).

conspicuous (tips of bractlets often purple).

Heads

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

1–2(–5+).

Cypselae

2.5–3 mm, glabrous;

pappi 4–5 mm.

1–1.25 mm, glabrous;

pappi 4–7 mm.

2n

= 46.

= 160+.

Packera fendleri

Packera contermina

Phenology Flowering late May–early Oct. Flowering early Jul–late Aug.
Habitat Steep slopes, loose, dry rocky or gravelly soils, along streams, open forests, disturbed sites Subalpine or alpine, open areas, rocky slopes or ravines, moist tundra or snowbeds
Elevation 1600–3200 m (5200–10500 ft) 2100–3000 m (6900–9800 ft)
Distribution
from FNA
CO; NM; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
MT; WA; AB; BC
[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 contermina grows in rocky areas and produces relatively short rhizomes and abundant thin fibrous roots. In mesic sites, the rhizomes are more robust and the fibrous roots are fewer. This taxon has been treated as part of P. cymbalaria or P. subnuda. Morphologic and cytologic data lend support to its recognition at species rank.

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

Source FNA vol. 20, p. 587. FNA vol. 20, p. 582.
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. 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
Synonyms Senecio fendleri, Senecio canovirens, Senecio fendleri var. molestus, Senecio nelsonii, Senecio rosulatus, Senecio salicinus Senecio conterminus
Name authority (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) (Greenman) J. F. Bain: Novon 9: 457. (1999)
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