Erigeron speciosus

Erigeron speciosus is a widespread North American species of flowering plants in the family Asteraceae known by the common names aspen fleabane,[2] garden fleabane,[3] and showy fleabane.[4]

Erigeron speciosus
Main Botanical Garden, Academy of Sciences, Moscow, Russia

Secure  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Erigeron
Species:
E. speciosus
Binomial name
Erigeron speciosus
Synonyms[1]
Synonymy
  • Erigeron conspicuus Rydb.
  • Erigeron eucephaloides Greene
  • Erigeron grandiflorus Nutt. October 1834 not Hook. September 1834
  • Erigeron leiophyllus Greene
  • Erigeron leucotrichus Rydb.
  • Erigeron macranthus Nutt.
  • Erigeron salicinus Rydb.
  • Erigeron villosulus Greene
  • Stenactis speciosa Lindl.

Description

E. speciosus is a perennial herb up which grows up to 100 centimetres (39 inches) tall, producing underground rhizomes and a woody caudex. The inflorescence generally contains 2–20 flower heads per stem. Each head contains 75–150 white, lavender or blue ray florets surrounding many yellow disc florets.[4][5] Flowers bloom from June to October.[4][6]

The species is similar to E. subtrinervis, the stems and leaves of which are hairy.[6]

Etymology

The specific epithet speciosus means 'pretty'.[6]

Distribution and habitat

The species has been found in western Canada and the United States, from Alberta and British Columbia south as far as Arizona and New Mexico,[6][7] with some isolated populations in the Mexican state of Baja California. It grows in open coniferous forests.[6]

References
  1. The Plant List, Erigeron speciosus (Lindl.) DC.
  2. USDA, NRCS (n.d.). "Erigeron speciosus". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 30 June 2015.
  3. BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  4. Flora of North America, Erigeron speciosus. Showy fleabane
  5. Eastwood, Alice 1896. Proceedings of the California Academy of Sciences, Series 2, 6: 297
  6. Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. p. 373. ISBN 978-0-375-40233-3.
  7. Biota of North America Program 2014 county distribution map


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