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saffron ragwort

elegant groundsel, rayless mountain butterweed, rayless mountain groundsel, rayless mountain ragwort

Habit Perennials, 20–60+ cm; perennating bases horizontal to ascending (relatively long and stout). Perennials, 10–100 cm; taprooted (caudices erect to suberect, relatively stout, branched).
Stems

usually 1, rarely 2–3, clustered, glabrous.

1 or 2–3, loosely clustered, glabrous or glabrate.

Basal leaves

(and proximal cauline) petiolate (petioles narrow);

blades narrowly lanceolate or ovate to oblong-ovate, 20–60+ × 10–40+ mm, bases abruptly contracted to tapering, margins subentire to crenate-dentate.

petiolate;

blades elliptic-ovate, oblong, or subreniform, 20–50 × 10–40+ mm, bases subcordate, truncate, or cuneate, margins usually crenate-dentate to coarsely dentate-lacerate, seldom subentire.

Cauline leaves

gradually reduced (sessile, weakly clasping; lanceolate to oblong or sublyrate, often pinnately lobed).

gradually reduced (petiolate, resembling basals, sublyrate or dissected; distal sessile, subentire to pinnatifid).

Peduncles

ebracteate or bracteate (bractlets inconspicuous), glabrous.

ebracteate (or bractlets inconspicuous), glabrous or glabrate.

Ray florets

8 or 13;

corolla laminae (deep yellow to orange-red) 6–8+ mm.

0 or 8–10;

corolla laminae (deep yellow) 3–5 mm.

Disc florets

60–80+;

corolla tubes 4.5–5.5 mm, limbs 2.5–3.5 mm.

60–70+;

corolla tubes 2–3 mm, limbs 2.5–3.5 mm.

Phyllaries

13 or 21, light green (or tips cyanic), 4–8 mm, glabrous.

13 or 21, green (tips sometimes reddish), 7–9 mm, glabrous.

Calyculi

0 or inconspicuous.

conspicuous (bractlets green, tips sometimes reddish).

Heads

7–15+ in open, corymbiform arrays.

8–20+ in subumbelliform arrays.

Cypselae

1–1.5 mm, glabrous;

pappi 3–5 mm.

1–2 mm, glabrous;

pappi 3–4 mm.

2n

= 46.

= 46, 126, 176, 184.

Packera crocata

Packera indecora

Phenology Flowering early Jul–mid Aug. Flowering mid Jun–late Aug.
Habitat Wet meadows, along trails, rocky outcrops Damp meadows, along streams, wet woodlands
Elevation 1800–3500 m (5900–11500 ft) 0–2300 m (0–7500 ft)
Distribution
from FNA
CO; ID; NM; NV; UT; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; CA; ID; MI; MN; MT; WA; WY; AB; BC; LB; MB; NT; NU; ON; QC; SK; YT
[WildflowerSearch map]
[BONAP county map]
Discussion

Packera crocata is characterized by deep yellow to reddish orange corollas. Some collectors have noted that there may be evidence for hybridization between P. crocata and P. dimorphophylla; the relationship between the two species needs further study.

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

Packera indecora is found at relatively low elevations in eastern Canada and at middle to subalpine elevations in the western cordillera. It closely resembles P. pauciflora and it is often difficult to identify specimens in the herbarium. Biosystematic studies (J. F. Bain and J. Whitton 1994) have indicated that although they are morphologically similar, P. indecora and P. pauciflora have distinctly different physiologies and should be maintained as distinct taxa.

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

Source FNA vol. 20, p. 583. FNA vol. 20, p. 590.
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. 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. 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 crocatus, Senecio pyrrhochrous, Senecio tracyi Senecio indecorus, Senecio burkei, Senecio idahoensis, Senecio pauciflorus subsp. fallax
Name authority (Rydberg) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) (Greene) Á. Löve & D. Löve: Bot. Not. 128: 520. (1976)
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