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sand fleabane, Wasatch daisy, Wasatch fleabane

cliff fleabane, rock-loving fleabane, rockloving erigeron

Habit Perennials, 6–25(–30) cm; taprooted, caudex branches relatively thick, retaining old leaf bases. Perennials, 10–20(–30) cm; taprooted, caudices woody, branches rhizomelike.
Stems

erect or ascending, wiry, glabrous, usually eglandular, sometimes minutely glandular distally.

usually decumbent-ascending, sometimes nearly erect, sparsely to densely white-villous (hairs loose, thin, often crinkly) or sparsely hispido-pilose (hairs usually stiff, spreading, sometimes antrorsely ascending or appressed; var. viscidulus), usually densely minutely glandular at least distally, sometimes eglandular or obscurely glandular (var. viscidulus).

Leaves

basal (usually persistent) and cauline;

basal blades linear-oblanceolate to linear or filiform (usually folding), 15–60(–80) × 0.5–2(–5) mm;

cauline gradually reduced distally, margins entire, sometimes sparsely ciliate (cilia ascending-appressed), faces abaxially glabrous, adaxially sparsely strigose, eglandular.

cauline;

blades narrowly oblong to oblanceolate, 10–25 × 1–5 mm, usually even-sized, margins entire, ciliate, faces sparsely to densely villous to hirsuto-villous, usually densely minutely glandular, sometimes eglandular or obscurely glandular (var. viscidulus).

Involucres

4–6 × 7–10 mm.

5.5–7(–8) × 8–12 mm.

Ray florets

10–25;

corollas blue, 4–8 mm, laminae not coiling or reflexing.

Ray (pistillate) florets

0.

Disc corollas

2.5–4.2 mm.

4–6 mm (throats slightly indurate, not inflated).

Phyllaries

in 2–3 series (often purple-tipped), glabrous, densely minutely glandular.

in 3–5 series (sometimes purplish apically), usually glabrous, sometimes with spreading hairs, densely glandular.

Heads

1–3(–9).

(discoid) (1–)2–5(–10) in corymbiform arrays.

Cypselae

1.5–2.2 mm, 2-nerved, faces sparsely strigose;

pappi: outer of setae, inner of 10–16 bristles.

(2–)2.5–3 mm, 2-nerved, glabrous;

pappi: outer of setae, inner of 22–30(–35) bristles.

Erigeron arenarioides

Erigeron petrophilus

Phenology Flowering Jun–Aug.
Habitat Crevices in limestone and quartzite outcrops and cliffs, rarely in beach sand, oak-maple, mountain brush-white fir
Elevation (1300–)1600–2900(–3600) m ((4300–)5200–9500(–11800) ft)
Distribution
from FNA
UT
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

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

Key
1. Stems and leaves eglandular or obscurely glandular; nonglandular hairs mostly stiff, straight or curved
var. viscidulus
1. Stems and leaves densely glandular; nonglandular hairs usually loose, often crinkly
→ 2
2. Phyllaries with distinctly expanded, purplish area at apices
var. petrophilus
2. Phyllaries with apices not purplish and differently colored from proximal portion
var. sierrensis
Source FNA vol. 20, p. 292. FNA vol. 20, p. 315.
Parent taxa Asteraceae > tribe Astereae > Erigeron Asteraceae > tribe Astereae > Erigeron
Sibling taxa
E. abajoensis, E. acomanus, E. acris, E. aequifolius, E. algidus, E. aliceae, E. allocotus, E. alpiniformis, E. anchana, E. annuus, E. aphanactis, E. argentatus, E. arisolius, E. arizonicus, E. asperugineus, E. aureus, E. barbellulatus, E. basalticus, E. bellidiastrum, E. bigelovii, E. biolettii, E. blochmaniae, E. bloomeri, E. breweri, E. caespitosus, E. calvus, E. canaani, E. canus, E. cascadensis, E. cavernensis, E. cervinus, E. chrysopsidis, E. clokeyi, E. compactus, E. compositus, E. concinnus, E. consimilis, E. corymbosus, E. coulteri, E. cronquistii, E. davisii, E. decumbens, E. denalii, E. disparipilus, E. divergens, E. eatonii, E. elatior, E. elatus, E. elegantulus, E. elmeri, E. engelmannii, E. evermannii, E. eximius, E. filifolius, E. flabellifolius, E. flagellaris, E. flettii, E. foliosus, E. formosissimus, E. garrettii, E. geiseri, E. glabellus, E. glacialis, E. glaucus, E. goodrichii, E. gracilis, E. grandiflorus, E. greenei, E. heliographis, E. hessii, E. howellii, E. humilis, E. hyperboreus, E. hyssopifolius, E. inornatus, E. jonesii, E. kachinensis, E. karvinskianus, E. klamathensis, E. kuschei, E. lackschewitzii, E. lanatus, E. lassenianus, E. latus, E. leibergii, E. leiomerus, E. lemmonii, E. linearis, E. lobatus, E. lonchophyllus, E. maguirei, E. mancus, E. maniopotamicus, E. mariposanus, E. melanocephalus, E. miser, E. modestus, E. muirii, E. multiceps, E. nanus, E. nauseosus, E. nematophyllus, E. neomexicanus, E. nivalis, E. ochroleucus, E. oreganus, E. oreophilus, E. ovinus, E. oxyphyllus, E. pallens, E. parishii, E. parryi, E. peregrinus, E. petrophilus, E. philadelphicus, E. pinnatisectus, E. piperianus, E. piscaticus, E. poliospermus, E. porsildii, E. pringlei, E. procumbens, E. pulchellus, E. pulcherrimus, E. pumilus, E. purpuratus, E. pygmaeus, E. quercifolius, E. radicatus, E. reductus, E. religiosus, E. rhizomatus, E. robustior, E. rybius, E. rydbergii, E. salishii, E. salmonensis, E. sanctarum, E. saxatilis, E. sceptrifer, E. scopulinus, E. serpentinus, E. sionis, E. sivinskii, E. sparsifolius, E. speciosus, E. strigosus, E. subglaber, E. subtrinervis, E. supplex, E. tenellus, E. tener, E. tenuis, E. tracyi, E. trifidus, E. tweedyi, E. uintahensis, E. uncialis, E. uniflorus, E. untermannii, E. ursinus, E. utahensis, E. vagus, E. velutipes, E. vernus, E. versicolor, E. vetensis, E. vicinus, E. vreelandii, E. watsonii, E. wilkenii, E. yukonensis
E. abajoensis, E. acomanus, E. acris, E. aequifolius, E. algidus, E. aliceae, E. allocotus, E. alpiniformis, E. anchana, E. annuus, E. aphanactis, E. arenarioides, E. argentatus, E. arisolius, E. arizonicus, E. asperugineus, E. aureus, E. barbellulatus, E. basalticus, E. bellidiastrum, E. bigelovii, E. biolettii, E. blochmaniae, E. bloomeri, E. breweri, E. caespitosus, E. calvus, E. canaani, E. canus, E. cascadensis, E. cavernensis, E. cervinus, E. chrysopsidis, E. clokeyi, E. compactus, E. compositus, E. concinnus, E. consimilis, E. corymbosus, E. coulteri, E. cronquistii, E. davisii, E. decumbens, E. denalii, E. disparipilus, E. divergens, E. eatonii, E. elatior, E. elatus, E. elegantulus, E. elmeri, E. engelmannii, E. evermannii, E. eximius, E. filifolius, E. flabellifolius, E. flagellaris, E. flettii, E. foliosus, E. formosissimus, E. garrettii, E. geiseri, E. glabellus, E. glacialis, E. glaucus, E. goodrichii, E. gracilis, E. grandiflorus, E. greenei, E. heliographis, E. hessii, E. howellii, E. humilis, E. hyperboreus, E. hyssopifolius, E. inornatus, E. jonesii, E. kachinensis, E. karvinskianus, E. klamathensis, E. kuschei, E. lackschewitzii, E. lanatus, E. lassenianus, E. latus, E. leibergii, E. leiomerus, E. lemmonii, E. linearis, E. lobatus, E. lonchophyllus, E. maguirei, E. mancus, E. maniopotamicus, E. mariposanus, E. melanocephalus, E. miser, E. modestus, E. muirii, E. multiceps, E. nanus, E. nauseosus, E. nematophyllus, E. neomexicanus, E. nivalis, E. ochroleucus, E. oreganus, E. oreophilus, E. ovinus, E. oxyphyllus, E. pallens, E. parishii, E. parryi, E. peregrinus, E. philadelphicus, E. pinnatisectus, E. piperianus, E. piscaticus, E. poliospermus, E. porsildii, E. pringlei, E. procumbens, E. pulchellus, E. pulcherrimus, E. pumilus, E. purpuratus, E. pygmaeus, E. quercifolius, E. radicatus, E. reductus, E. religiosus, E. rhizomatus, E. robustior, E. rybius, E. rydbergii, E. salishii, E. salmonensis, E. sanctarum, E. saxatilis, E. sceptrifer, E. scopulinus, E. serpentinus, E. sionis, E. sivinskii, E. sparsifolius, E. speciosus, E. strigosus, E. subglaber, E. subtrinervis, E. supplex, E. tenellus, E. tener, E. tenuis, E. tracyi, E. trifidus, E. tweedyi, E. uintahensis, E. uncialis, E. uniflorus, E. untermannii, E. ursinus, E. utahensis, E. vagus, E. velutipes, E. vernus, E. versicolor, E. vetensis, E. vicinus, E. vreelandii, E. watsonii, E. wilkenii, E. yukonensis
Subordinate taxa
E. petrophilus var. petrophilus, E. petrophilus var. sierrensis, E. petrophilus var. viscidulus
Synonyms Aster arenarioides
Name authority (D. C. Eaton ex A. Gray) A. Gray ex Rydberg: Fl. Rocky Mts., 1067. (1917) Greene: Pittonia 1: 218. (1888)
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