Flora of North America species comparison

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Packera fendleri

Packera anonyma

Fendler's ragwort, notchleaf groundsel

Small's ragwort
Habit Perennials, 10–40+ cm; rhizomatous (rhizomes horizontal to suberect, branched). Perennials, 30–70+ cm; fibrous-rooted (caudices erect to ascending).
Stems

1 or multiple (crowded to subcespitose), floccose-tomentose or glabrescent.

1 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually tomentose.
Basal leaves

petiolate;

blades lanceolate to oblanceolate, 30–60+ × 10–30+ mm, bases tapering, margins shallowly, evenly pinnatifid to pinnatisect or wavy (adaxial faces floccose-tomentose or subglabrescent).

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 (sessile; lanceolate to oblanceolate, pinnatisect to wavy).

gradually reduced (petiolate or sessile; elliptic to lanceolate, often pinnatifid).
Peduncles

bracteate, densely to irregularly floccose.

bracteate, distally tomentose.
Ray florets

6–8+;

corolla laminae 5–7 mm.

8 or 13;

corolla laminae 5–7+ mm.
Disc florets

30–40+;

corolla tubes 2.5–3 mm, limbs, 2.5–3.5 mm.

45–60+;

corolla tubes 1.5–2 mm, limbs 1.5–2 mm.
Phyllaries

13, green, 5–7 mm, floccose proximally to glabrescent distally.

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

0 or inconspicuous (bractlets red-tinged).

inconspicuous.
Heads

6–25+ in open or compact, corymbiform arrays.

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

2.5–3 mm, glabrous;

pappi 4–5 mm.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.
2n

= 46.

= 44.

Packera fendleri

Packera anonyma
Phenology Flowering late May–early Oct. Flowering early Jun–mid Jul (north), early Apr–late May (south).
Habitat Steep slopes, loose, dry rocky or gravelly soils, along streams, open forests, disturbed sites Open fields, meadows, roadsides, disturbed sites, in drying or sandy soils
Elevation 1600–3200 m (5200–10500 ft) 50–1800 m (200–5900 ft)
Distribution
from FNA
CO; NM; WY
[WildflowerSearch map]
[BONAP county map]
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 fendleri is abundant, almost weedy in the southern Rocky Mountains. It thrives in a wide range of elevations and in a wide variety of habitats; flowering times vary. It frequently grows in close association with other species of Packera and may hybridize with them.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

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. 587. FNA vol. 20, p. 578.
Parent taxa Asteraceae > tribe Senecioneae > Packera Asteraceae > tribe Senecioneae > Packera
Sibling taxa
P. anonyma, 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. 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
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 fendleri, Senecio canovirens, Senecio fendleri var. molestus, Senecio nelsonii, Senecio rosulatus, Senecio salicinus Senecio anonymus, Senecio aureus var. angustifolius, Senecio earlei, Senecio smallii
Name authority (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) (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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