Flora of North America species comparison

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Packera anonyma

Small's ragwort
Habit 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).
Peduncles

bracteate, distally tomentose.
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.
Phyllaries

13 or 21, light green, 3–5 mm, glabrous.
Calyculi

inconspicuous.
Heads

20–70(–100+) in corymbiform arrays.
Cypselae

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.
2n

= 44.

Packera anonyma
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 (200–5900 ft)
Distribution
from FNA
AL; AR; DC; FL; GA; KY; LA; MD; MS; NC; NY; OH; PA; SC; TN; VA; WV
[WildflowerSearch map]
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 578.
Parent taxa Asteraceae > tribe Senecioneae > Packera
Sibling taxa
P. antennariifolia, P. aurea, P. bernardina, P. bolanderi, P. breweri, P. cana, P. cardamine, P. castoreus, P. clevelandii, P. contermina, P. crocata, P. cymbalaria, P. cynthioides, P. debilis, P. dimorphophylla, P. eurycephala, P. fendleri, P. flettii, P. franciscana, P. ganderi, P. glabella, P. greenei, P. hartiana, P. hesperia, P. hyperborealis, P. indecora, P. ionophylla, P. layneae, P. macounii, P. malmstenii, P. millefolium, P. millelobata, P. multilobata, P. musiniensis, P. neomexicana, P. obovata, P. ogotorukensis, P. pauciflora, P. paupercula, P. plattensis, P. porteri, P. pseudaurea, P. quercetorum, P. sanguisorboides, P. schweinitziana, P. spellenbergii, P. streptanthifolia, P. subnuda, P. tampicana, P. texensis, P. tomentosa, P. tridenticulata, P. werneriifolia
Synonyms Senecio anonymus, Senecio aureus var. angustifolius, Senecio earlei, Senecio smallii
Name authority (Alph. Wood) W. A. Weber & Á. Löve: Phytologia 49: 45. (1981)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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