Packera indecora |
Packera bernardina |
|
---|---|---|
elegant groundsel, rayless mountain butterweed, rayless mountain groundsel, rayless mountain ragwort |
San Bernardino ragwort |
|
Habit | Perennials, 10–100 cm; taprooted (caudices erect to suberect, relatively stout, branched). | Perennials, 15–30+ cm; fibrous-rooted (caudices branched, erect to suberect). |
Stems | 1 or 2–3, loosely clustered, glabrous or glabrate. |
1 (per rosette, rosettes clustered), lanate-tomentose to glabrescent. |
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 obovate to broadly spatulate, 5–20+ × 10–15 mm, bases tapering, margins subentire or dentate apically (faces lanate-tomentose to glabrescent). |
Cauline leaves | gradually reduced (petiolate, resembling basals, sublyrate or dissected; distal sessile, subentire to pinnatifid). |
gradually reduced (sessile; spatulate to linear, densely tomentose). |
Peduncles | ebracteate (or bractlets inconspicuous), glabrous or glabrate. |
bracteate, densely lanate-tomentose. |
Ray florets | 0 or 8–10; corolla laminae (deep yellow) 3–5 mm. |
8 or 13; corolla laminae 8–10 mm. |
Disc florets | 60–70+; corolla tubes 2–3 mm, limbs 2.5–3.5 mm. |
35–50+; corolla tubes 2–2.5 mm, limbs 2–2.5 mm. |
Phyllaries | 13 or 21, green (tips sometimes reddish), 7–9 mm, glabrous. |
13 or 21, green, 6–8 mm, lanate-tomentose, glabrate distally. |
Calyculi | conspicuous (bractlets green, tips sometimes reddish). |
0. |
Heads | 8–20+ in subumbelliform arrays. |
2–8+ in compact cymiform arrays. |
Cypselae | 1–2 mm, glabrous; pappi 3–4 mm. |
0.75–1 mm, glabrous or hispid on ribs; pappi 3–4 mm. |
2n | = 46, 126, 176, 184. |
= 46. |
Packera indecora |
Packera bernardina |
|
Phenology | Flowering mid Jun–late Aug. | Flowering late May–late Jul. |
Habitat | Damp meadows, along streams, wet woodlands | Dry rocky slopes, duff of pine forests |
Elevation | 0–2300 m (0–7500 ft) | 1700–2200 m (5600–7200 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 bernardina is known only from the San Bernardino Mountains and has been collected most frequently from Bear Valley. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 590. | FNA vol. 20, p. 579. |
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera |
Sibling taxa | ||
Synonyms | Senecio indecorus, Senecio burkei, Senecio idahoensis, Senecio pauciflorus subsp. fallax | Senecio bernardinus, Senecio bernardinus var. sparsilobatus, Senecio ionophyllus var. bernardinus, Senecio ionophyllus var. sparsilobatus, Senecio sparsilobatus |
Name authority | (Greene) Á. Löve & D. Löve: Bot. Not. 128: 520. (1976) | (Greene) W. A. Weber & Á. Löve: Phytologia 49: 45. (1981) |
Web links |