Packera anonyma

(Alph. Wood) W. A. Weber & Á. Löve

Phytologia 49: 45. 1981.

Common names: Small’s ragwort
Basionym: Senecio anonymus Alph. Wood Class-book Bot. ed. s.n.(b), 464. 1861
Synonyms: Senecio aureus var. angustifolius Britton Senecio earlei Small Senecio smallii Britton
Treatment appears in FNA Volume 20. Treatment on page 578. Mentioned on page 573, 592.

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: Flowering early Jun–mid Jul (north), early Apr–late May (south).
Habitat: Open fields, meadows, roadsides, disturbed sites, in drying or sandy soils
Elevation: 50–1800 m



Ala., Ark., D.C., Fla., Ga., Ky., La., Md., Miss., N.Y., N.C., Ohio, Pa., S.C., Tenn., Va., W.Va.


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.

Selected References


Lower Taxa

... more about "Packera anonyma"
Debra K. Trock +
(Alph. Wood) W. A. Weber & Á. Löve +
Senecio anonymus +
Small’s ragwort +
Ala. +, Ark. +, D.C. +, Fla. +, Ga. +, Ky. +, La. +, Md. +, Miss. +, N.Y. +, N.C. +, Ohio +, Pa. +, S.C. +, Tenn. +, Va. +  and W.Va. +
50–1800 m +
Open fields, meadows, roadsides, disturbed sites, in drying or sandy soils +
Flowering early Jun–mid Jul (north), early Apr–late May (south). +
Illustrated +  and Endemic +
Senecio aureus var. angustifolius +, Senecio earlei +  and Senecio smallii +
Packera anonyma +
species +