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glaber daisy, rockslide daisy, rockslide fleabane, rockslide yellow fleabane

lobed fleabane

Habit Perennials, 4–12(–15) cm; taprooted (taproots often not evident or not collected), caudices with diffuse system of relatively long and slender, rhizomelike branches. Annuals, mostly 10–40(–50) cm; taprooted.
Stems

decumbent to ascending or erect (usually purplish proximally, sometimes greenish), glabrous or sparsely strigillose (hairs closely to loosely appressed), eglandular.

erect, sparsely hispido-pilose (hairs spreading, straight, 0.6–2 mm), densely stipitate-glandular.

Leaves

basal and cauline;

basal blades oblanceolate to obovate or spatulate, 15–70 × 2–11(–15) mm;

cauline reduced distally (bases of basal sometimes purplish, enlarged; of cauline, not subclasping), margins entire, faces glabrous or sparsely strigose, eglandular.

basal (persistent) and cauline;

basal and proximal cauline blades obovate-spatulate, 50–100(–150) × 4–25 mm, cauline gradually reduced (lobing distally), margins pinnatifid or bipinnatifid with (1–)2–4 pairs of rounded to acute lobes, faces sparsely hispido-pilose, stipitate-glandular.

Involucres

4–6 × 7–13 mm.

3–4 × 6–10 mm.

Ray florets

15–60;

corollas white to blue or purple, 6–11 mm, laminae reflexing.

85–110;

corollas white, drying dark blue, 6–9 mm, laminae not coiling or reflexing.

Disc corollas

3.2–4.4 mm.

1.8–2.9 mm.

Phyllaries

in 2–3 series (often purplish, narrowly elliptic, erect, apices appressed), glabrous or sparsely strigose, minutely glandular.

in 2–3 series (sometimes basally connate, broad, thin) sparsely hispido-pilose, stipitate glandular.

Heads

1.

1–5 (peduncles long, ebracteate).

Cypselae

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

pappi: outer of setae, inner of 15–25 bristles.

1.2–1.4 mm, 2-nerved, faces sparsely strigose;

pappi: outer of scales (sometimes connate, forming crowns), inner of 11–12 bristles.

2n

= 18.

Erigeron leiomerus

Erigeron lobatus

Phenology Flowering Jun–Sep. Flowering (Jan–)Feb–May(–Oct).
Habitat Talus slopes, boulder fields, and other rocky or gravelly habitats, meadows, spruce, lodgepole pine, alpine tundra Stream banks, sandy lake shores, dry washes, desert or riparian scrub, sometime with creosote bush
Elevation 2600–3800 m (8500–12500 ft) 300–1200 m (1000–3900 ft)
Distribution
from FNA
CO; ID; MT; NM; NV; UT; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; NV; Mexico (Sonora)
[WildflowerSearch map]
[BONAP county map]
Discussion

Erigeron lobatus is characterized by persistent basal and proximal cauline leaves with rounded to acute lobes, vestiture of stipitate glands and sparse, spreading, hispido-pilose hairs, heads on relatively long, ebracteate peduncles, and broad, thin phyllaries. Erigeron divergens often is similar; its glandularity is not stipitate and its nonglandular hairs are shorter and denser.

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

Source FNA vol. 20, p. 308. FNA vol. 20, p. 338.
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. 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. 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. 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
Name authority A. Gray: in A. Gray et al., Syn. Fl. N. Amer. 1(2): 211. (1884) A. Nelson: Amer. J. Bot. 21: 580. (1934)
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