Isotria verticillata

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Isotria verticillata
Whorled Pogonia (4751254392).jpg
Flower of a large whorled pogonia
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Vanilloideae
Genus: Isotria
Species:
I. verticillata
Binomial name
Isotria verticillata
(Muhl. ex Willd.) Raf.
Synonyms [1] [2] [3]
  • Arethusa verticillataMuhl. ex Willd.
  • Odonectis verticillata (Muhl. ex Willd.) Raf.
  • Pogonia verticillata(Muhl. ex Willd.) Nutt.
  • Pogonia verticillata var. medeoloidesEaton

Isotria verticillata, commonly known as the large whorled pogonia and purple fiveleaf orchid, is an orchid species native to eastern North America.

Contents

Distribution

The orchid's native range is across the Eastern United States in the Appalachian Mountains, the central and eastern Great Lakes region, and elsewhere from Maine south to Florida, and westward from Michigan south to Texas. It is also native to Ontario, Canada.

It grows in acidic soils in forests and in peat bogs. [1]

Description

Isotria verticillata is a terrestrial orchid of eastern North America spreading by underground rhizomes.

Its whorl of 5 or 6 leaves [4] are green above, waxy and a bit whitened below.

The flowers are yellowish-green, up to 110 mm (4.3 inches) across. [1]

References

  1. 1 2 3 Flora of North America v 26 p 512.
  2. ↑ Tropicos
  3. ↑ The Plant List
  4. ↑ Shuttleworth, Floyd S.; Zim, Herbert S.; Dillon, Gordon W. (1970). Orchids. New York: Golden Press. p. 29.
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