Auricled twayblade
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Tribe: Neottieae
Genus: Neottia
Species:
N. auriculata
Binomial name
Neottia auriculata
(Wiegand) Szlach.[1]
Synonyms[1]
  • Listera auriculata Wiegand
  • Ophrys auriculata (Wiegand) House
  • Bifolium auriculatum (Wiegand) Nieuwl.
  • Listera borealis f. trifolia Lepage
  • Listera auriculata f. trifolia (Lepage) Lepage

Neottia auriculata (syn. Listera auriculata), the auricled twayblade,[2] is a species of terrestrial orchid found in northeastern North America (Labrador, New Brunswick and Maine west to Manitoba and Minnesota.[1][3][4]

Description

N. auriculata when mature, has two ovate, sessile leaves that are paired on the stem but arranged oppositely.[5] It has small pale-green flowers with three sepals and three petals, the lowest petal is modified into a wider lip - which is divided from one-fourth to one-third its length.[5]

Distribution and habitat

N. auriculata is a rare orchid species, which was in 1975 proposed as a threatened species in the US, but subsequent surveys found that it existed in greater abundance than initially thought.[5] In the Great lakes region it occupies a very specific habitat, which has sandy soils just about the high water line of rivers that enter lake Superior. It is associated with alders or mossy-banks under trees.[5]

References

  1. 1 2 3 "Neottia auriculata", World Checklist of Selected Plant Families, Royal Botanic Gardens, Kew, retrieved 2012-04-05
  2. ↑ "Plants Profile for Listera auriculata (auricled twayblade)", USDA Plants, USDA Natural Resources Conservation Service, retrieved 2012-04-05 (as Listera auriculata)
  3. ↑ Flora of North America v 26 p 589, Auricled twayblade, Listera auriculata Wiegand, Bull. Torrey Bot. Club. 26: 166, plate 356, fig. 2. 1899.
  4. ↑ Biota of North America Program, 2013 county distribution map, Neottia auriculata
  5. 1 2 3 4 Barbara Coffin; Lee Pfannmuller (1988). Minnesota's Endangered Flora and Fauna. U of Minnesota Press. p. 107. ISBN 978-0-8166-1689-3.


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