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Clokey's daisy, Clokey's fleabane

alpine fleabane

Habit Perennials, 3–20(–30) cm; taprooted, caudices usually branched, retaining old leaf bases. Perennials 2–20 cm; rhizomatous, fibrous-rooted, rhizomes or caudices sometimes branched.
Stems

usually ascending to erect, moderately hirsute to hispidulous (hairs spreading-deflexed), minutely glandular at least distally.

erect, moderately villoso-hirsute (hairs sometimes retrorse), eglandular.

Leaves

basal (persistent) and cauline (petioles prominently ciliate, hairs spreading, thick-based);

basal blades 1–3-nerved, narrowly oblanceolate (often folding), 20–50(–80) × 1–5 mm, margins entire, faces strigose or hispidulous to hirsutulous, minutely glandular;

cauline blades linear to linear-lanceolate, reduced distally to near heads.

basal (persistent) and cauline;

basal blades oblanceolate to spatulate or subspatulate, 20–50(–80) × 4–10 mm, margins entire, (apices rounded) faces moderately villoso-hirsute, eglandular;

cauline broadly linear to narrowly lanceolate-oblong, gradually reduced distally.

Involucres

4–7 × 6–11 mm.

6–8 × 12–20 mm.

Ray florets

20–40(–55);

corollas blue, less commonly white to pink, 6–11 mm, laminae reflexing.

100–200;

corollas white to pink-purple, 4–6 mm, laminae erect (filiform, 0.3–1 mm wide), not coiling or reflexing.

Disc corollas

2.9–4.5 mm (throats tubular).

3.7–4.7 mm.

Phyllaries

in 2–3(–4) series (greenish), moderately hirsute, densely minutely glandular.

in 2–3 series (somewhat foliaceous, usually green, faces sometimes purplish throughout or at tips), villous (usually mostly on proximal 1/2, hairs rigid, usually oriented in single direction, cross walls sometimes colored), eglandular.

Heads

1(–2).

1(–2, very rarely –4).

Cypselae

1.8–2.5 mm, 2-nerved, faces sparsely strigose;

pappi: outer of inconspicuous, fine setae, inner of (13–)20–27 bristles.

1.5 mm (immature), 2-nerved, faces sparsely strigose;

pappi: outer of setae, inner of 20–30 (non-accrescent) bristles.

2n

= 18.

Erigeron clokeyi

Erigeron alpiniformis

Phenology Flowering Jun–Aug.
Habitat Rocky slopes and meadows
Elevation ca. 1100–1800 m (ca. 3600–5900 ft)
Distribution
from FNA
CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
from USDA
Greenland
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

Erigeron clockeyi is found in the Great Basin and Sierra Nevada.

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

T. W. Böcher et al. (1968) identified this as Erigeron uniflorus in the strict sense and treated E. uniflorus var. eriocephalus as the distinct species E. eriocephalus. A. Cronquist (1947) viewed E. alpiniformis as distinct from both E. eriocephalus and E. borealis (Vierhapper) Simmons. The taxonomy of those plants needs to be reviewed in detail.

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

Key
1. Leaves hirsuto-strigose (hairs basally ascending, otherwise straight, antrorsely appressed); cypselae 2.2–2.5 mm; Charleston Mountains, Clark County, Nevada
var. clokeyi
1. Leaves uniformly hispidulous to hirsutulous (hairs spreading to spreading-arching, stiff); cypselae 1.8–2 mm; California, c Nevada, wc Utah
var. pinzliae
Source FNA vol. 20, p. 291. FNA vol. 20, p. 326.
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. 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. 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. 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. 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
Subordinate taxa
E. clokeyi var. clokeyi, E. clokeyi var. pinzliae
Name authority Cronquist: Brittonia 6: 214. (1947) Cronquist: Brittonia 6: 235. (1947)
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