Compilation
Packera multilobata

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Name

Identification
Packera multilobata (Torr. & A. Gray) W.A. Weber & Á. Löve [family COMPOSITAE ] (stored under name); Senecio leucoreus Greenm. [family COMPOSITAE ] Verified by Greenman, J.M.,
Related name
  • Senecio thornberi
  • Senecio lynceus
  • Senecio uintahensis
  • Senecio multilobatus
  • Senecio leucoreus
  • Senecio nelsonii
  • Senecio lapidum
  • Packera multilobata
Common name
  • Lobeleaf Groundsel, Flora of North America Vol. 20

Flora

Entry for Packera multilobata (Torrey & A. Gray) W. A. Weber & Á. 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 multilobata (Torrey & A. Gray) W. A. Weber & Á. Löve [family COMPOSITAE], Phytologia, 49: 47. 1981
Senecio multilobatus Torrey & A. Gray [family COMPOSITAE], Mem. Amer. Acad. Arts, n. s., 4: 109. 1849
Senecio leucoreus Greenman [family COMPOSITAE]
Senecio lynceus Greene [family COMPOSITAE]
Senecio nelsonii Rydberg var. uintahensis A. Nelson [family COMPOSITAE]
Senecio prolixus Greenman [family COMPOSITAE]
Senecio stygius Greene [family COMPOSITAE]
Senecio thornberi Greenman [family COMPOSITAE]
Senecio uintahensis (A. Nelson) Greenman [family COMPOSITAE]
Treatment Author(s)
Debra K. Trock
Information
Biennials or perennials, 20–40+ cm; taprooted (caudices ascending to erect, weakly branched). Stems 1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose. Basal leaves (and proximal cauline) petiolate; blades obovate, oblanceolate, spatulate, or lyrate to sublyrate (± pinnately lobed, lateral lobes 3–6 pairs, smaller than terminal lobes), 40–80+ × 10–30+ mm, bases tapering, ultimate margins incised to dentate. Cauline leaves gradually reduced (sessile). Heads 10–30+ in open, corymbiform or subumbelliform arrays. Peduncles conspicuously bracteate, glabrous or tomentose. Calyculi conspicuous. Phyllaries 13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally). Ray florets 8–13; corolla laminae 7–10 mm. Disc florets 40–50+; corolla tubes 4–5 mm, limbs 3–4 mm. Cypselae 2–3 mm, glabrous or hirtellous on ribs; pappi 5–6 mm. 2n = 46, 92.
Phenology
may (spring), jun-jul (summer)
Altitude range
1200–2900 m;
Distribution
USA Ariz.USA Calif.USA Colo.USA IdahoUSA Nev.USA N.Mex.USA UtahUSA Wyo.
Discussion
Packera multilobata is abundant and widespread west of the Continental Divide. Both morphology and habitat vary. In colder parts of its range, plants are shorter, caudices are better developed with clustered stems, and leaf lobes are larger. In desert-like habitats, basal leaves are narrower and more finely lobed, the tomentum is often persistent, and stems are usually single.

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