Flora of North America species comparison

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Erigeron inornatus

Erigeron inornatus var. inornatus

California rayless daisy, California rayless fleabane, lava rayless fleabane, rayless fleabane, unadorned fleabane, western rayless fleabane
Photo is of parent taxon

California rayless daisy, California rayless fleabane, fleabane, lava rayless fleabane, unadorned fleabane
Habit Perennials, 20–70(–90) cm; taprooted, woody.
Stems

basally decumbent, abruptly erect, usually glabrous or glabrate, rarely sparsely strigose on proximal 1/2, or hirsutulous proximally and strigose distally, or distally densely hirsutulous (hairs usually ± deflexed, sometimes loosely antrorsely ascending; var. keilii), eglandular.

basally ascending, distally erect, 30–70(–90) cm, strigose in proximal 1/2, sparsely strigose or glabrous distally.
Leaves

cauline;

blades narrowly oblong-oblanceolate to linear, 20–60 × 2–7 mm, seldom reduced distally, margins entire, faces glabrous, sparsely strigose, or hispid, eglandular.

proximal and mid margins eciliate, faces strigose.
Involucres

4.5–6.5 × 7–12 mm.

4.5–5.5 mm.
Ray (pistillate) florets

0.

Disc corollas

3.8–4.5 mm (throats slightly indurate, not inflated).

Phyllaries

in 3–5 series (margins broad, stramineous, midveins orange, thin), glabrous, usually eglandular, rarely minutely glandular.

Heads

(discoid) (1–)2–15 in corymbiform arrays.

Cypselae

2–3 mm, 2-nerved, faces glabrous;

pappi: outer of setae, inner of 28–45 bristles.

2n

= 18.

Erigeron inornatus

Erigeron inornatus var. inornatus
Phenology Flowering Jun–Sep(–Oct).
Habitat Dry, rocky or sandy sites, chaparral to oak, pine, or pine-fir woods
Elevation (100–)1000–1900(–2300) m ((300–)3300–6200(–7500) ft)
Distribution
from FNA
CA; NV; OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV; OR; WA
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Distal stems densely hirsutulous (hairs slightly deflexed, sometimes densely ascending-strigose)
var. keilii
1. Distal stems usually sparsely strigose or glabrous
→ 2
2. Stems 10–20 cm, decumbent-ascending, hirsutulous (hairs spreading-deflexed) in proximal 1/2; proximal and mid leaf margins with stiff, spreading cilia, faces hispid; involucres 5–6.5 mm
var. calidipetris
2. Stems 30–70(–90) cm, basally ascending, distally erect, strigose in proximal 1/2; proximal and mid leaf margins eciliate, faces strigose; involucres 4.5–5.5 mm
var. inornatus
Source FNA vol. 20, p. 314. FNA vol. 20, p. 314.
Parent taxa Asteraceae > tribe Astereae > Erigeron Asteraceae > tribe Astereae > Erigeron > Erigeron inornatus
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. 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. inornatus var. calidipetris, E. inornatus var. keilii
Subordinate taxa
E. inornatus var. calidipetris, E. inornatus var. inornatus, E. inornatus var. keilii
Synonyms E. foliosus var. inornatus
Name authority (A. Gray) A. Gray: Notes Compositae, 88. (1880) unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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