Compilation
Packera anonyma

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Name

Identification
Packera anonyma (Alph. Wood) W.A. Weber & Á. Löve [family COMPOSITAE ] (stored under name); Senecio smallii Britton ex Small & Vail [family COMPOSITAE ]
Related name
  • Senecio smallii
  • Packera anonyma
Common name
  • Small’s ragwort, Flora of North America Vol. 20

Flora

Entry for Packera anonyma (Alph. Wood) 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 anonyma (Alph. Wood) W. A. Weber & Á. Löve [family COMPOSITAE], Phytologia, 49: 45. 1981
Senecio anonymus Alph. Wood [family COMPOSITAE], Class-book Bot. ed. s.n.(b), 464. 1861
Senecio aureus Linnaeus var. angustifolius Britton [family COMPOSITAE]
Senecio earlei Small [family COMPOSITAE]
Senecio smallii Britton [family COMPOSITAE]
Treatment Author(s)
Debra K. Trock
Information
Perennials, 30–70+ cm; fibrous-rooted (caudices erect to ascending). Stems 1 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually tomentose. Basal leaves petiolate; blades narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous). Cauline leaves gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid). Heads 20–70(–100+) in corymbiform arrays. Peduncles bracteate, distally tomentose. Calyculi inconspicuous. Phyllaries 13 or 21, light green, 3–5 mm, glabrous. Ray florets 8 or 13; corolla laminae 5–7+ mm. Disc florets 45–60+; corolla tubes 1.5–2 mm, limbs 1.5–2 mm. Cypselae 0.75–1 mm, hirsute on ribs; pappi 2.5–3 mm. 2n = 44.
Phenology
apr-may (spring), jun-jul (summer)
Altitude range
50–1800 m;
Distribution
USA Ala.USA Ark.USA D.C.USA Fla.USA Ga.USA Ky.USA La.USA Md.USA Miss.USA N.Y.USA N.C.USA OhioUSA Pa.USA S.C.USA Tenn.USA Va.USA W.Va.
Discussion
Packera anonyma is common, almost weedy throughout most of its range. It grows on serpentine in Maryland, Ohio, and Pennsylvania. In western parts of its range, putative hybrids between P. anonyma and P. plattensis and P. tomentosa have been reported.

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