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Clokey's daisy, Clokey's fleabane

tundra fleabane

Habit Perennials, 3–20(–30) cm; taprooted, caudices usually branched, retaining old leaf bases. Perennials, 3–15 cm; rhizomatous, fibrous-rooted, sometimes with branched, rhizomelike caudices.
Stems

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

erect to basally ascending, hirsute to hirsuto-villous (hair cross walls purplish black), minutely glandular (conspicuously so near heads).

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.

mostly basal (persistent) or basal and cauline;

basal blades narrowly oblanceolate to narrowly oblanceolate-spatulate 10–50(–60) × 1.5–6 mm;

cauline linear and reduced distally, margins entire (apices acute to obtuse), faces hirsute, eglandular.

Involucres

4–7 × 6–11 mm.

5–8 × 9–15 mm.

Ray florets

20–40(–55);

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

30–60;

corollas white to blue, drying white or pink, purple, or blue, 7–15 mm (mostly 1–2 mm wide), laminae coiling.

Disc corollas

2.9–4.5 mm (throats tubular).

3.5–5 mm.

Phyllaries

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

in 2(–3) series (usually dark purple), hirsute to villous (hair cross walls purplish black), minutely glandular.

Heads

1(–2).

1.

Cypselae

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

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

1.7–2 mm, 2-nerved, faces densely strigoso-hirsute;

pappi: outer of setae (inconspicuous), inner of 15–20 bristles.

2n

= 18.

Erigeron clokeyi

Erigeron hyperboreus

Phenology Flowering Jun–Aug.
Habitat Ridges, rocky slopes, limestone scree, talus, serpentine fell fields, sandy tidal pools, grassy pockets in tundra, dryas heath, heath tundra
Elevation (30–)100–900(–2400) m ((100–)300–3000(–7900) ft)
Distribution
from FNA
CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; YT
[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.)

Some plants in each of two collections of Erigeron hyperboreus from Alaska (Parker 755, ALA; Murray 8514, ALA) have glabrous or glabrate leaves, stems, and phyllaries; other plants of the same populations are more typical and intermediacy is evident.

(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. 325.
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. 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. 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
Synonyms E. alaskanus
Name authority Cronquist: Brittonia 6: 214. (1947) Greene: Pittonia 2: 227. (1892)
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