Erigeron

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Erigeron
Erigeron glaucus, Seaside Daisy
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Astereae
Genus: Erigeron
L.
Species

See text.

Erigeron (/ɨˈrɪərɒn/;[1] syn. Stenactis Cass.) is a genus of about 390 species[2] of daisy-like flowering plants in the family Asteraceae, sometimes confused with other closely related genera, Aster and the true daisy Bellis. The genus has a cosmopolitan distribution in dry, mountainous areas and grassland, with the highest diversity in North America, where 173 species occur.[2][3]

Etymology[edit]

The most widely used common name, fleabane, is shared with related plants in several other genera. It 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.

Description[edit]

The species may be annuals, biennials or perennials. They are well-branched 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).

Cultivation[edit]

Many species are used as ornamental plants, with numerous named cultivars such as 'Wayne Roderick', 'Charity', 'Foersters Liebling' and 'Dunkelste aller' ("The darkest of all" with semi-double, deep violet flower heads).[4]

Ecology[edit]

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 species[edit]

  • 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 – Shortray Fleabane
  • Erigeron maguirei – Maguire's Fleabane
  • Erigeron mairei – Atlas Mountains Fleabane
  • Erigeron mancus – Depauperate Fleabane
  • Erigeron maniopotamicus – Mad River Fleabane
  • 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 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 petrophilus – Cliff Fleabane, Rock daisy (no ray flowers)
  • Erigeron philadelphicus – Philadelphia Fleabane/Daisy
  • Erigeron pinnatisectus – Feather-leaf Fleabane
  • Erigeron piperianus – Piper's Fleabane
  • Erigeron piscaticus – Fish Creek Fleabane
  • Erigeron poliospermus – Purple Cushion Fleabane
  • 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 pulcherrimus – Basin Fleabane
  • Erigeron pumilus – Shaggy Fleabane
  • Erigeron purpuratus – Purple Fleabane
  • Erigeron pygmaeus – Pygmy Fleabane
  • Erigeron quercifolius – Oak-leaf Fleabane
  • Erigeron radicatus – Tap-root Fleabane
  • Erigeron reductus
  • Erigeron religiosus – Clear Creek Fleabane
  • Erigeron rhizomatus – Zuni 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 strigosus – Prairie Fleabane
  • Erigeron subglaber – Hairless Fleabane
  • Erigeron subtrinervis – Three-nerve Fleabane
  • 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 uniflorus – One-flowered Fleabane
  • Erigeron untermannii – Indian Canyon Fleabane
  • Erigeron ursinus – Bear River Fleabane
  • Erigeron utahensis – Utah Fleabane
  • Erigeron vagus – Rambling Fleabane
  • Erigeron velutipes
  • Erigeron vernus – Early White-top Fleabane
  • Erigeron versicolor – Sonora Fleabane
  • Erigeron vetensis – Early Blue-top Fleabane
  • Erigeron viscosum
  • Erigeron vreelandii
  • Erigeron watsonii – Watson's Fleabane
  • Erigeron wilkenii – Wilken's Fleabane
  • Erigeron yukonensis – Yukon Fleabane
  • Erigeron zothecinus – Lake Powell Fleabane

References[edit]

  1. ^ Sunset Western Garden Book (6th ed.). 1995. pp. 606–607. ISBN 978-0-376-03850-0. 
  2. ^ a b Nesom, Guy L (2006), "Erigeron", in Flora of North America Editorial Committee, eds. 1993+, Flora of North America 20, New York & Oxford: Oxford University Press, p. 256 
  3. ^ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964. 
  4. ^ "RHS Plant Selector - Erigeron 'Dunkelste Aller'". Retrieved 17 July 2013. 

External links[edit]