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Bolander's groundsel, Bolander's ragwort

Cleveland's ragwort

Habit Perennials, 20–50+ cm; fibrous-rooted (caudices creeping). Perennials, 30–80+ cm; taprooted (caudices suberect to erect, stout).
Stems

1 or 2–3, loosely clustered, glabrous.

usually 1 (sometimes more, clustered), glaucous.

Basal leaves

(and proximal cauline) petiolate;

blades ± orbiculate to oblong, or lyrate (lateral lobes 1–3 pairs, sinuses usually rounded, midribs usually winged), 50–120+ × 30–70+ mm, bases cordate to subcordate, margins shallowly to deeply incised.

(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 (petiolate or sessile and clasping; lanceolate, incised).

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

Peduncles

ebracteate or inconspicuously bracteate, glabrous.

conspicuously bracteate, glaucous.

Ray florets

8 or 13;

corolla laminae 10–15+ mm.

8–10(–13);

corolla laminae 5–7 mm.

Disc florets

30–45+;

corolla tubes 3–4 mm, limbs 3.5–4.5 mm.

25–40+;

corolla tubes 2–3 mm, limbs 3–4 mm.

Phyllaries

(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.

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

Calyculi

conspicuous.

conspicuous.

Heads

8–15+ in corymbiform or subumbelliform arrays.

12–20+ in open, corymbiform arrays.

Cypselae

2.5–3.5 mm, glabrous;

pappi 5–7 mm.

1–1.5 mm, glabrous;

pappi 5–6 mm.

2n

= 46.

= 46.

Packera bolanderi

Packera clevelandii

Phenology Flowering mid Jun–mid Jul.
Habitat Rocky, serpentine soils, open, dry, shrubby areas, dry streambeds
Elevation 300–700 m (1000–2300 ft)
Distribution
from FNA
CA; OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

The two varieties of Packera bolanderi have been treated as species. The morphologic characteristics used to distinguish the varieties vary widely within some populations. Presence or absence of multicellular hairs has been used to separate the varieties; that trait is also variable. The morphologic distinction is weak; habitat and elevation records lend support for recognizing two varieties.

(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.)

Key
1. Basal leaves (relatively thick and turgid); phyllaries 13 or 21, 6–8+ mm, hairy proximally (hairs tan or brownish, multicelled)
var. bolanderi
1. Basal leaves (relatively thin); phyllaries 8, 13, (or 21), 5–6 mm, glabrous
var. harfordii
Source FNA vol. 20, p. 579. 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. 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
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
Subordinate taxa
P. bolanderi var. bolanderi, P. bolanderi var. harfordii
Synonyms Senecio bolanderi Senecio clevelandii, Senecio clevelandii var. heterophyllus
Name authority (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 45. (1981) (Greene) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981)
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