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Compilation
Packera pauciflora

2 Images see all

Isotype of Senecio aureus Linnaeus var. discoideus Hooker [family ASTERACEAE]
Isotype of Senecio lembertii Greene [family ASTERACEAE]
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Name

Identification
Packera pauciflora (Pursh) A. Love and D. Love [family ASTERACEAE ] (stored under name); Verified by Bain, J. F., 1998 Isotype of Senecio lembertii Greene [family ASTERACEAE ] Verified by Not on Sheet,
Related name
  • Senecio lembertii
  • Packera pauciflora
Common name
  • Alpine groundsel, Flora of North America Vol. 20

Flora

Entry for Packera pauciflora (Pursh) Á. Löve & D. Löve [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 20,
Names
Packera pauciflora (Pursh) Á. Löve & D. Löve [family COMPOSITAE], Bot. Not., 128: 520. 1976
Senecio pauciflorus Pursh [family COMPOSITAE], Fl. Amer. Sept., 2: 529. 1813
Senecio aureus Linnaeus var. discoideus Hooker [family COMPOSITAE]
Senecio discoideus (Hooker) Britton [family COMPOSITAE]
Senecio lembertii Greene [family COMPOSITAE]
Treatment Author(s)
Debra K. Trock
Information
Perennials, 20–40+ cm; fibrous-rooted (caudices weakly spreading, horizontal to erect). Stems 1 or 2–3, clustered, glabrous or glabrate. Basal leaves (relatively thick and turgid) petiolate; blades elliptic-ovate, ovate, or subreniform, 20–40+ × 10–30+ mm, bases tapering to subcordate, margins dentate to crenate (proximal cauline leaves petiolate; margins dissected to pinnatifid). Cauline leaves gradually reduced (sessile, subentire). Heads 1–6+ in open to compact, subumbelliform arrays. Peduncles bracteate (bractlets cyanic or reddish), glabrous or sparsely tomentose distally. Calyculi conspicuous (bractlets deep red or at least apices deep red to purple). Phyllaries 13 or 21, deep red or green (then tips deep red to purple), 7–10 mm, glabrous. Ray florets 0 or 8–13; corolla laminae (deep orange-yellow) 5–7 mm. Disc florets 60–80+; corolla tubes 1.5–2.5 mm, limbs 2.5–3.5 mm. Cypselae 1–1.5 mm, glabrous; pappi 3–4.5 mm. 2n = 46, 130+.
Phenology
jul-aug (summer)
Altitude range
0–2700 m;
Distribution
USA AlaskaUSA Calif.USA Wash.USA Wyo.Canada Alta.Canada B.C.Canada Nfld. and Labr.Canada N.W.T.Canada Ont.Canada Que.Canada Yukon
Discussion
Heads of Packera pauciflora are usually discoid. Its range and habitat overlap those of P. indecora; the two can be difficult to distinguish. Disjunction from principal distribution to Sierra Nevada of California is 1200 km.

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