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

flame ragwort

Habit Perennials, 10–100 cm; taprooted (caudices erect to suberect, relatively stout, branched). Perennials, 20–30+ cm; rhizomatous (rhizomes horizontal to erect, not branched), sometimes stoloniferous.
Stems

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

1, irregularly lanate or tomentose.

Basal leaves

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.

(and proximal cauline) petiolate;

blades orbiculate, ovate, oblanceolate, or rhombic, 20–50+ × 20–40+ mm, bases tapering, sometimes obtuse, margins coarsely dentate to crenate-dentate.

Cauline leaves

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

gradually to abruptly reduced (petioles broad-winged, clasping, blades obovate, bases tapering, margins irregularly dentate; distal sessile, linear to lanceolate, entire).

Peduncles

ebracteate (or bractlets inconspicuous), glabrous or glabrate.

bracteate, lanate or tomentose distally.

Ray florets

0 or 8–10;

corolla laminae (deep yellow) 3–5 mm.

8–10(–13);

corolla laminae (red-orange) 8–15+ mm.

Disc florets

60–70+;

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

35–65+;

corolla tubes 4–5 mm, limbs 5–6 mm.

Phyllaries

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

21, green (tips sometimes deep red), 8–10+ mm, densely tomentose proximally, sparsely tomentose distally.

Calyculi

conspicuous (bractlets green, tips sometimes reddish).

conspicuous.

Heads

8–20+ in subumbelliform arrays.

1–3+.

Cypselae

1–2 mm, glabrous;

pappi 3–4 mm.

1.5–2.5 mm, glabrous;

pappi 8–11 mm.

2n

= 46, 126, 176, 184.

= 40, 46, 92.

Packera indecora

Packera greenei

Phenology Flowering mid Jun–late Aug. Flowering mid May–early Jul.
Habitat Damp meadows, along streams, wet woodlands Dry, rocky, usually serpentine soils, open scrub-pine associations
Elevation 0–2300 m (0–7500 ft) 100–1600 m (300–5200 ft)
Distribution
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]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)

Of conservation concern.

Packera greenei is known from Coast Ranges of northern California. It has relatively large heads and bright orange-red ray corollas; its leaves are usually cyanic abaxially.

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

Source FNA vol. 20, p. 590. FNA vol. 20, p. 588.
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. 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
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. 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 indecorus, Senecio burkei, Senecio idahoensis, Senecio pauciflorus subsp. fallax Senecio greenei
Name authority (Greene) Á. Löve & D. Löve: Bot. Not. 128: 520. (1976) (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981)
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