Packera crocata |
Packera indecora |
|
---|---|---|
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 |
CO; ID; NM; NV; UT; WY
|
AK; CA; ID; MI; MN; MT; WA; WY; AB; BC; LB; MB; NT; NU; ON; QC; SK; YT
|
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 | ||
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) |
Web links |