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