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Tehachapi ragwort

northern groundsel

Habit Perennials, 15–30+ cm; taprooted (caudices erect) or rhizomatous (rhizomes branched). Perennials, 6–20+ cm; fibrous-rooted or rhizomatous (rhizomes horizontal to suberect, stout).
Stems

usually 1, rarely 2–3, clustered, irregularly arachnoid-tomentose to lanate-tomentose or glabrescent.

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

Basal leaves

(and proximal cauline, relatively turgid) petiolate;

blades broadly ovate or lyrate (± pinnately lobed, lateral lobes 1–3 pairs, smaller than terminals), 10–30+ × 10–20+ mm, bases tapering to cuneate, ultimate margins subentire or crenate to coarsely dentate (abaxial faces tomentose).

(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

gradually reduced (sessile; bractlike, entire).

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

Peduncles

bracteate, irregularly tomentose.

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

Ray florets

8–13;

corolla laminae 8–10 mm.

0 (rarely) or 10–12;

corolla laminae 8–10 mm.

Disc florets

60–75+;

corolla tubes 2.5–4 mm, limbs 3.5–5 mm.

45–60+;

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

Phyllaries

(8–)13 or 21, green, 7–10+ mm, densely tomentose proximally, glabrescent distally (tips hair-tufted).

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

Calyculi

inconspicuous.

0 or inconspicuous (bractlets purple-tinged).

Heads

3–6 in cymiform arrays.

1–2(–5+) in cymiform arrays.

Cypselae

2–2.5 mm, glabrous;

pappi 5–7 mm.

1.5–2.5 mm, hirtellous on ribs;

pappi 6–7 mm.

2n

= 46.

= 46.

Packera ionophylla

Packera hyperborealis

Phenology Flowering early Jun–late Aug. Flowering mid Jun–early Aug.
Habitat Dry, rocky slopes, crevices, granitic outcrops, coniferous woodlands Open, dry, rocky or sandy areas, sometimes in fertile soils overlaying limestone
Elevation 1400–3000 m (4600–9800 ft) 0–900 m (0–3000 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; NT; NU; YT
[BONAP county map]
Discussion

Of conservation concern.

Packera ionophylla is known only from the San Bernardino, San Gabriel, and Tehachapi mountains and a population on Alamo Mountain in eastern Ventura County.

(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. 590. 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. flettii, P. franciscana, P. ganderi, P. glabella, P. greenei, P. hartiana, P. hesperia, P. hyperborealis, P. indecora, 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 ionophyllus, Senecio ionophyllus var. intrepidus Senecio hyperborealis
Name authority (Greene) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981) (Greenman) Á. Löve & D. Löve: Bot. Not. 128: 520. (1976)
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