Definitions

genus erigeron

Erigeron

[ih-rij-uh-ron, -er-uhn]

Erigeron (syn. Stenactis Cass.) is a genus of about 390 species of flowering plants in the family Asteraceae. The genus has a cosmopolitan distribution with the highest species diversity in North America, where 173 species occur.

The most widely used common name, fleabane, is shared with related plants in several other genera; another common name is summer starwort. The common name is derived from the belief that the dried plants repelled fleas, whilst the name erigeron is derived from the Greek (eri = early; geron = old man), a reference to the appearance of the white hairs of the fruit soon after flowering.

The species are annuals, biennials or perennials. They are well-branched plants with erect stems, characterized by their numerous white, lavender or pink ray flowers and yellow disc flowers. Some members of this group have no ray flowers. The pappus (= modified calyx, forming a crown) is shorter than in Aster, and consists of bristles. The ray florets are narrower than in Aster, but are clearly longer than the involucre (= whorled bracts).

Many species are used as ornamental plants, with numerous named cultivars such as 'Wayne Roderick', 'Charity', 'Dunkelste Aller' and 'Foersters Liebling'.

Erigeron species are used as food plants by the larvae of some Lepidoptera species including Bucculatrix angustata, Coleophora squamosella (which feeds exclusively on E. acris), Schinia intermontana, Schinia obscurata (both of which also feed exclusively on Erigeron), Schinia sexata (which feeds exclusively on E. glabellus) and Schinia villosa.

Selected taxa

  • Erigeron abajoensis - Abajo fleabane
  • Erigeron accedens
  • Erigeron acer (syn. E. acris) : Blue Fleabane
  • Erigeron acomanus - Bluewater Fleabane
  • Erigeron acutatus
  • Erigeron aequifolius - Hall's Fleabane, Hall's Daisy
  • Erigeron alaskanus
  • Erigeron alcicornutus
  • Erigeron algidus - Stalked Fleabane
  • Erigeron aliceae - Alice Eastwood's Fleabane
  • Erigeron allocotus - Big Horn Fleabane
  • Erigeron alpinus - Alpine Erigeron
  • Erigeron anchana - Sierra Ancha Fleabane
  • Erigeron angustatus
  • Erigeron annuus - Eastern Daisy Fleabane
  • Erigeron aphanactis - Rayless Shaggy Fleabane
    • Erigeron aphanactis var. aphanactis
    • Erigeron aphanactis var. congestus
  • Erigeron arenarioides - Sand Fleabane
  • Erigeron argentatus - Silver Fleabane
  • Erigeron arisolius - Arid Throne Fleabane
  • Erigeron arizonicus - Arizona Fleabane
  • Erigeron asperugineus - Idaho Fleabane
  • Erigeron atticus
  • Erigeron aurantiacus - Orange Daisy
  • Erigeron aureus - Alpine Yellow Fleabane
  • Erigeron austiniae
  • Erigeron awapensis - Awapa Fleabane
  • Erigeron barbellatus - Shining Fleabane
  • Erigeron basalticus - Basalt Fleabane
  • Erigeron bellidiastrum - Western Daisy Fleabane
    • Erigeron bellidiastrum var. arenarius
    • Erigeron bellidiastrum var. bellidiastrum
    • Erigeron bellidiastrum var. robustus
  • Erigeron bellioides
  • Erigeron bigelovii - Bigelow's Fleabane
  • Erigeron biolettii - Biolett's Erigeron
  • Erigeron bistiensis
  • Erigeron blochmaniae - Blochman's Erigeron
  • Erigeron bloomeri - Scabland Fleabane
    • Erigeron bloomeri var. blloomeri
    • Erigeron bloomeri var. nudatus
    • Erigeron bloomeri var. pubens
  • Erigeron borealis - Alpine Fleabane
  • Erigeron breviscapinus - Life Flower
  • Erigeron breweri - Brewer's Fleabane
    • Erigeron breweri var. bisanctus
    • Erigeron breweri var. breweri
    • Erigeron breweri var. covilei
    • Erigeron breweri var. jacinteus
    • Erigeron breweri var. klamathensis
    • Erigeron breweri var. porphyreticus
  • Erigeron caespitosus (syn. E. hyperboreus) - Tufted Fleabane
  • Erigeron calvus
  • Erigeron canus - Hoary Fleabane
  • Erigeron cascadensis - Cascade Fleabane
  • Erigeron caucasicus
  • Erigeron cervinus - Siskiyou Fleabane
  • Erigeron chrysopsidis - Dwarf Yellow Fleabane, Golden Daisy/Fleabane (yellow ray flowers).
  • Erigeron cinereus
  • Erigeron clokeyi - Clokey's Fleabane
  • Erigeron colomexicanus - Running Fleabane
  • Erigeron compactus - Fern-leaf Fleabane
  • Erigeron compositus - Cut-leaf Fleabane, Dwarf Mountain Fleabane (with or without ray flowers)
  • Erigeron concinnus - Navajo Fleabane
    • Erigeron concinnus var. concinnus
    • Erigeron concinnus var. condensatus
    • Erigeron concinnus var. subglaber
  • Erigeron consimilis - Foothill Fleabane
  • Erigeron corymbosus - Long-leaf Fleabane
  • Erigeron coulteri - Large Mountain Fleabane
  • Erigeron crenatus
  • Erigeron cronquistii - Cronquist's Fleabane
  • Erigeron cuneifolius - Wedge-leaf Fleabane
  • Erigeron decumbens - Willamette Fleabane
    • Erigeron decumbens var. decumbens
    • Erigeron decumbens var. robustior
  • Erigeron delicatus
  • Erigeron delphinifolius
  • Erigeron disparipilus - White Cushion Fleabane
  • Erigeron divergens - Spreading Fleabane
  • Erigeron eatonii - Eaton's Fleabane
    • Erigeron eatonii var. eatonii
    • Erigeron eatonii var. lavandulus
    • Erigeron eatonii var. nevandicola
    • Erigeron eatonii var. plantagineus
    • Erigeron eatonii var. sonnei
    • Erigeron eatonii var. villosus
  • Erigeron elatior - Tall Fleabane
  • Erigeron elatus
  • Erigeron elegantulus - Blue Dwarf Fleabane
  • Erigeron elmeri
  • Erigeron engelmannii - Engelmann's Fleabane
    • Erigeron engelmannii var. davisii
    • Erigeron engelmannii var. engelmannii
  • Erigeron evermannii - Evermann's Fleabane
  • Erigeron eximius - Spruce-fir Fleabane
  • Erigeron filifolius - Thread-leaf Fleabane
    • Erigeron filifolius var. filifolius
    • Erigeron filifolius var. robustior
    • Erigeron filifolius var. typicus
  • Erigeron flabellifolius - Fan-leaf Fleabane.
  • Erigeron flagellaris - Trailing Fleabane
  • Erigeron flettii - Flett's Fleabane
  • Erigeron foliosus - Leafy Fleabane
    • Erigeron foliosus var. confinis
    • Erigeron foliosus var. foliosus
    • Erigeron foliosus var. franciscensis
    • Erigeron foliosus var. mendocinus
    • Erigeron foliosus var. hartwegii
  • Erigeron formosissimus - Beautiful Fleabane
    • Erigeron formosissimus var. formosissimus
    • Erigeron formosissimus var. viscidus
  • Erigeron fragilis
  • Erigeron frigidus
  • Erigeron frondeus
  • Erigeron fruticetorum
  • Erigeron fuertesii
  • Erigeron furcatus
  • Erigeron garrettii - Garrett's Fleabane
  • Erigeron geiseri - Geiser's Fleabane
  • Erigeron glabellus - Streamside Fleabane
    • Erigeron glabellus var. glabellus
    • Erigeron glabellus var. pubescens
  • Erigeron glabratus
  • Erigeron glaucus - Beach Aster, Beach Daisy, Seaside Daisy
  • Erigeron goodrichii - Uinta Mountain Fleabane
  • Erigeron gracilis - Quill Fleabane
  • Erigeron grandiflorus - Large-flower Fleabane
    • Erigeron grandiflorus var. arcticus
    • Erigeron grandiflorus var. grandiflorus
  • Erigeron heliographis - Heliograph Peak Fleabane
  • Erigeron hessii - Hess' Fleabane
  • Erigeron howellii - Howell's Fleabane
  • Erigeron hultenii - Hulten's Fleabane
  • Erigeron humilis - Arctic-alpine Fleabane
  • Erigeron hungaricus - endemic to the Tatra Mountains
  • Erigeron hybridus
  • Erigeron hyssopifolius - Hyssop-leaf Fleabane
  • Erigeron inornatus - California Rayless Fleabane
    • Erigeron inornatus var. calidipetris
    • Erigeron inornatus var. inornatus
    • Erigeron inornatus var. keilii
  • Erigeron jamaicensis - Jamaica Fleabane
  • Erigeron jonesii - Jones' Fleabane
  • Erigeron kachinensis - Kachina Fleabane
  • Erigeron karvinskianus - Latin American Fleabane
  • Erigeron kuschei - Chiricahua Fleabane
  • Erigeron lackschewitzii
  • Erigeron lanatus - Woolly Fleaban
  • Erigeron lassenianus - Mt. Lassen Fleabane
    • Erigeron lassenianus var. deficiens
    • Erigeron lassenianus var. lassenianus
  • Erigeron latus - Broad Fleabane
  • Erigeron leibergii - Leiberg's Fleabane
  • Erigeron leiomerus - Rockslide Yellow Fleabane
  • Erigeron lemmonii - Lemmon's Fleabane
  • Erigeron linearis - Desert Yellow Fleabane
  • Erigeron lobatus - Lobed Fleabane
  • Erigeron lonchophyllus
  • Erigeron maguirei - Maguire's Fleabane
  • Erigeron mairei - Atlas Mountains Fleabane
  • Erigeron mancus - Depauperate Fleabane
  • Erigeron mariposanus
  • Erigeron melanocephalus - Black-head Fleabane
  • Erigeron mexiae - Mex's Fleabane
  • Erigeron miser - Starved Fleabane
  • Erigeron miyabeanus - Japanese Fleabane
  • Erigeron modestus - Plains Fleabane
  • Erigeron muirii - Muir's Fleabane
  • Erigeron multiceps - Kern River Fleabane
  • Erigeron multiradiatus - Himalayan Fleabane
  • Erigeron myosotis
  • Erigeron nanus - Dwarf Fleabane
  • Erigeron nauseosus - Marysvale Fleabane
  • Erigeron neglectus
  • Erigeron nematophyllus - Needle-leaf Fleabane
  • Erigeron neomexicanus - New Mexico Fleabane
  • Erigeron ochroleucus - Buff Fleabane
    • Erigeron ochroleucus var. ochroleucus
    • Erigeron ochroleucus var. scribneri
  • Erigeron oharai
  • Erigeron oreganus - Gorge Fleabane
  • Erigeron oreophilus - Chaparral Fleabane
  • Erigeron ovinus - Sheep Fleabane
  • Erigeron oxyphyllus - Wand Fleabane
  • Erigeron parishii - Parish's Fleabane
  • Erigeron peregrinus - Wandering Fleabane, Subalpine Fleabane, Foreign Fleabane
    • Erigeron peregrinus subsp. callianthemus
    • Erigeron peregrinus subsp. peregrinus
  • Erigeron petrophilus - Cliff Fleabane, Rock daisy (no ray flowers)
    • Erigeron petrophilus var. petrophilus
    • Erigeron petrophilus var. sierrensis
    • Erigeron petrophilus var. viscidulus
  • Erigeron philadelphicus - Philadelphia Fleabane/Daisy
    • Erigeron philadelphicus var. philadelphicus
    • Erigeron philadelphicus var. provancheri
  • Erigeron pinnatisectus - Feather-leaf Fleabane
  • Erigeron piperianus - Piper's Fleabane
  • Erigeron piscaticus - Fish Creek Fleabane
  • Erigeron poliospermus - Purple Cushion Fleabane
    • Erigeron poliospermus var. cereus
    • Erigeron poliospermus var. poliospermus
  • Erigeron pringlei - Pringle's Fleabane
  • Erigeron procumbens - Corpus Christi Fleabane
  • Erigeron proselyticus - Professor's Fleabane
  • Erigeron pubescens - Hairy Fleabane
  • Erigeron pulchellus - Robin's Plantain
    • Erigeron pulchellus var. brauniae
    • Erigeron pulchellus var. pulchellus
    • Erigeron pulchellus var; tolsteadii
  • Erigeron pulcherrimus - Basin Fleabane
  • Erigeron pumilus - Shaggy Fleabane
    • Erigeron pumilus ssp. intermedius
    • Erigeron pumilus var. pumilus
  • Erigeron purpuratus - Purple Fleabane
  • Erigeron pygmaeus - Pygmy Fleabane
  • Erigeron quercifolius - Oak-leaf Fleabane
  • Erigeron radicatus - Tap-root Fleabane
  • Erigeron reductus
    • Erigeron reductus var. angustatus
    • Erigeron reductus var. reductus
  • Erigeron religiosus - Clear Creek Fleabane
  • Erigeron rhizomatous - Rhizome Fleabane
  • Erigeron roylei - Royle's Fleabane
  • Erigeron rybius - Royal Fleabane
  • Erigeron rydbergii - Rydberg's Fleabane
  • Erigeron salishii - Star Peak Fleabane
  • Erigeron salmonensis - Salmon River Fleabane
  • Erigeron sanctarum - Saints Fleabane
  • Erigeron saxatilis - Rock Fleabane
  • Erigeron sceptrifer - Scepter-bearing Fleabane
  • Erigeron scopulinus - Winn Falls Fleabane
  • Erigeron serpentinus
  • Erigeron simplex - One-stem Fleabane
  • Erigeron sionis - Zion Fleabane
  • Erigeron sivinskii
  • Erigeron socorrensis
  • Erigeron speciosus - Aspen Fleabane
    • Erigeron speciosus var. macranthus
    • Erigeron speciosus var. speciosus
  • Erigeron strigosus - Prairie Fleabane
    • Erigeron strigosus var. beyrichii
    • Erigeron strigosus var. septentrionalis
    • Erigeron strigosus var. strigosus
  • Erigeron subglaber - Hairless Fleabane
  • Erigeron subtrinervis - Three-nerve Fleabane
    • Erigeron subtrinervis var. conspicuus
    • Erigeron subtrinervis var. trinervis
  • Erigeron supplex - Supple Fleabane
  • Erigeron tenellus - Rio Grande Fleabane
  • Erigeron tener - Slender Fleabane
  • Erigeron tenuis - Slender-leaf Fleabane
  • Erigeron thunbergii - Thunberg's Fleabane
  • Erigeron tweedyi - Tweedy's Fleabane
  • Erigeron uintahensis - Uinta Fleabane
  • Erigeron uncialis - Lone Fleabane
    • Erigeron uncialis subsp. conjugans
    • Erigeron uncialis subsp. uncialis
  • Erigeron uniflorus - One-flowered Fleabane
  • Erigeron untermannii - Indian Canyon Fleabane
  • Erigeron ursinus - Bear River Fleabane
  • Erigeron utahensis - Utah Fleabane
    • Erigeron utahensis var. sparsifolius
    • Erigeron utahensis var. utahensis
  • Erigeron vagus - Rambling Fleabane
  • Erigeron velutipes
  • Erigeron vernus - Early White-top Fleabane
  • Erigeron versicolor - Sonora Fleabane
  • Erigeron vetensis - Early Blue-top Fleabane
  • Erigeron vreelandii
  • Erigeron watsonii - Watson's Fleabane
  • Erigeron wilkenii - Wilken's Fleabane
  • Erigeron yukonensis - Yukon Fleabane
  • Erigeron zothecinus - Lake Powell Fleabane

References

External links

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