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rayless shaggy fleabane

Marysvale fleabane

Habit Perennials, 2–20(–30) cm; taprooted, caudices branched. Perennials, 5–15(–25) cm; tap-rooted (caudices with relatively short and thick branches).
Stems

erect to slightly decumbent-ascending, canescent-hirsute, densely stipitate-glandular.

erect or basally ascending, glabrous, minutely glandular.

Leaves

basal (persistent) and cauline (petioles prominently ciliate, at least on proximal portions, hairs thick-based, spreading);

basal blades linear-oblanceolate to spatulate, 20–80 × 2–7 mm;

cauline gradually or abruptly reduced distally, sometimes bractlike (stems scapiform), margins entire, faces canescent-hirsute, densely stipitate-glandular (hairs finer).

basal (persistent) and cauline;

basal blades (usually 3-nerved) oblanceolate to obovate or spatulate, 30–80(–100) × (2–)4–15 mm, margins entire, sometimes spreading-ciliate (sometimes with conspicuously raised primary and secondary venation), faces usually glabrous, sometimes sparsely hispidulous to hirsute, minutely glandular;

cauline blades oblong-oblanceolate, little reduced distally.

Involucres

4–6 × 7–15 mm.

5–8 × 8–15 mm.

Ray florets

30–60;

corollas white or blue, 6–12 mm, laminae reflexing.

Ray (pistillate) florets

30–45;

corollas usually tubular, lacking laminae, or laminae shorter than involucres.

Disc corollas

2.8–4.5 mm (throats white-indurate and inflated, conspicuously puberulent).

3–5.2 mm.

Phyllaries

in 2–3 series, coarsely hirsute, densely minutely glandular.

in 2–3(–4) series, glabrous or sparsely strigose, minutely glandular.

Heads

(disciform) 1–4.

1(–2).

Cypselae

1.5–1.8 mm, 2-nerved, faces sparsely strigose (carpopodia whitish);

pappi: outer of scales or setae, inner of 7–20 bristles.

2–2.3 mm, 2-nerved, faces sparsely strigose;

pappi: outer of setae, inner of 12–20 bristles.

Erigeron aphanactis

Erigeron nauseosus

Phenology Flowering May–Aug.
Habitat Dry, rocky or sandy soils, talus, or cliff ledges and crevices, sagebrush, pinyon-juniper, oak, fir, spruce-aspen
Elevation (1600–)2500–3500 m ((5200–)8200–11500 ft)
Distribution
from FNA
AZ; CA; CO; NM; NV; OR; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
NV; UT
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

Erigeron aphanactis is distinguished from E. austiniae by its conspicuously puberulent (versus essentially glabrous) disc corollas and white (versus yellow) carpopodia; it also is similiar in habit and vestiture to E. concinnus, which has conspicuous white to pinkish rays.

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

Key
1. Stems leafy; heads usually 2–3; disc corolla lobes usually yellowish
var. aphanactis
1. Stems scapiform; heads 1; disc corolla lobes sometimes becoming reddish or purplish
var. congestus
Source FNA vol. 20, p. 291. FNA vol. 20, p. 308.
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. 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
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. 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. aphanactis var. aphanactis, E. aphanactis var. congestus
Synonyms E. concinnus var. aphanactis E. caespitosus var. nauseosus
Name authority (A. Gray) Greene: Fl. Francisc., 389. (1897) (M. E. Jones) A. Nelson: Bot. Gaz. 37: 270. (1904)
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