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Flett's groundsel, Flett's ragwort

northern groundsel

Habit Perennials, 10–40+ cm; rhizomatous (rhizomes horizontal to erect). Perennials, 6–20+ cm; fibrous-rooted or rhizomatous (rhizomes horizontal to suberect, stout).
Stems

1 or 2–5 (often scapiform), loosely clustered, glabrous or leaf axils sparsely hairy.

usually 1, sometimes multiple, bases and leaf axils tomentose, otherwise glabrous.

Basal leaves

(and proximal cauline) petiolate;

blades obovate to ovate or sublyrate, 30–60+ × 10–40+ mm, bases tapering, margins deeply dissected or pinnatifid, ultimate margins crenate to crenate-dentate.

(and proximal cauline) petiolate;

blades oblanceolate to obovate or lyrate (pinnately lobed to pinnatifid, terminal lobes larger than laterals), 10–30+ × 10–20+ mm, bases tapering, ultimate margins ± crenate to serrate.

Cauline leaves

abruptly reduced or 0 (sessile; ovate to obovate, dissected or pinnatifid).

gradually to abruptly reduced (sessile; pinnatisect or entire).

Peduncles

inconspicuously bracteate or ebracteate, glabrous.

bracteate (bractlets purple-tinged), glabrous or glabrate.

Ray florets

5 or 8;

corolla laminae 5–10 mm.

0 (rarely) or 10–12;

corolla laminae 8–10 mm.

Disc florets

20–30+;

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

45–60+;

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

Phyllaries

(8–)13, light green (tips yellowish), 4–7 mm, glabrous.

13, green (sometimes purple-tinged distally), 6–8 mm, glabrous.

Calyculi

0 or inconspicuous.

0 or inconspicuous (bractlets purple-tinged).

Heads

4–10+ in subumbelliform cymiform arrays.

1–2(–5+) in cymiform arrays.

Cypselae

1–1.5 mm, glabrous;

pappi 4–4.5 mm.

1.5–2.5 mm, hirtellous on ribs;

pappi 6–7 mm.

2n

= 40.

= 46.

Packera flettii

Packera hyperborealis

Phenology Flowering early Jul–mid Aug. Flowering mid Jun–early Aug.
Habitat Exposed slopes, rocky or gravelly soils Open, dry, rocky or sandy areas, sometimes in fertile soils overlaying limestone
Elevation 700–2000 m (2300–6600 ft) 0–900 m (0–3000 ft)
Distribution
from FNA
OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; NT; NU; YT
[BONAP county map]
Discussion

Packera flettii is known from the Olympic Mountains and near Mt. Rainer in Washington and coastal mountains of Clatsop County, Oregon. It has a chromosome number unique in the genus and is not known to hybridize with other species of Packera.

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

Packera hyperborealis is known only from lowland tundra from Alaska to the Mackenzie River and as far south as the northern end of the Franklin Mountains. It has also been collected as far north as Banks Island.

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

Source FNA vol. 20, p. 587. FNA vol. 20, p. 589.
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. 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. 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. 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 flettii Senecio hyperborealis
Name authority (Wiegand) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) (Greenman) Á. Löve & D. Löve: Bot. Not. 128: 520. (1976)
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