Flora of North America species comparison

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Packera schweinitziana

Packera clevelandii

New England groundsel, Schweinitz's groundsel, Schweinitz's ragwort

Cleveland's ragwort
Habit Perennials, 40–70+ cm, fibrous-rooted and/or rhizomatous (rhizomes weakly branched). Perennials, 30–80+ cm; taprooted (caudices suberect to erect, stout).
Stems

1, glabrous or leaf axils sparsely tomentose.

usually 1 (sometimes more, clustered), glaucous.
Basal leaves

(and proximal cauline) petiolate;

blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

(and proximal cauline, relatively thick and turgid) petiolate;

blades lanceolate to narrowly oblanceolate, 30–100+ × 10–20+ mm, bases tapering, margins entire or subentire.
Cauline leaves

gradually reduced (± sessile; lacerate to subcrenate).

gradually reduced (sessile and weakly clasping; lanceolate, entire).
Peduncles

bracteate, glabrous.

conspicuously bracteate, glaucous.
Ray florets

8–13;

corolla laminae 4–7 mm.

8–10(–13);

corolla laminae 5–7 mm.
Disc florets

50–70+;

corolla tubes 3.5–4 mm, limbs 3–3.5 mm.

25–40+;

corolla tubes 2–3 mm, limbs 3–4 mm.
Phyllaries

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

(13) 21, green (tips often purple), glabrous.
Calyculi

conspicuous.

conspicuous.
Heads

8–20+ in loose, corymbiform arrays.

12–20+ in open, corymbiform arrays.
Cypselae

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

1–1.5 mm, glabrous;

pappi 5–6 mm.
2n

= 44.

= 46.

Packera schweinitziana

Packera clevelandii
Phenology Flowering May–Jul. Flowering mid Jun–mid Jul.
Habitat Sunny, wet areas, meadows, swamps, ditches, roadsides Rocky, serpentine soils, open, dry, shrubby areas, dry streambeds
Elevation 100–1800 m (300–5900 ft) 300–700 m (1000–2300 ft)
Distribution
from FNA
ME; NC; NH; NY; TN; VT; NB; NS; PE; QC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Packera schweinitziana is rarely mistaken for any other taxon. It grows on slightly acidic soils and may reproduce vegetatively by branched rhizomes. The group of populations on Roan Mountain on the Tennessee-North Carolina border is disjunct from the main distribution.

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

Packera clevelandii is known only from the North Coast Ranges and foothills of the Sierra Nevada on serpentine soils in chaparral communities. It is the only Packera with subsucculent, glaucous herbage.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 598. FNA vol. 20, p. 582.
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. 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. spellenbergii, P. streptanthifolia, P. subnuda, P. tampicana, P. texensis, P. tomentosa, P. tridenticulata, P. werneriifolia
P. anonyma, P. antennariifolia, P. aurea, P. bernardina, P. bolanderi, P. breweri, P. cana, P. cardamine, P. castoreus, 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 schweinitzianus, Senecio aureus var. lanceolatus, Senecio robbinsii Senecio clevelandii, Senecio clevelandii var. heterophyllus
Name authority (Nuttall) W. A. Weber & Á. Löve: Phytologia 49: 48. (1981) (Greene) W. A. Weber & Á. Löve: Phytologia 49: 46. (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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