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Neottia convallarioides facts for kids

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Neottia convallarioides
Listera convallarioides.jpg
Scientific classification
  • Epipactis convallarioides Sw.
  • Listera convallarioides (Sw.) Nutt.
  • Serapias convallarioides (Sw.) Steud.
  • Diphryllum convallarioides (Sw.) Kuntze
  • Ophrys convallarioides (Sw.) W.Wight ex House
  • Bifolium convallarioides (Sw.) Nieuwl.
  • Listera convallarioides subsp. euconvallarioides Beauverd

Neottia convallarioides is a species of orchid known by the common names broad-lipped twayblade and broad-leaved twayblade. It was formerly placed in the genus Listera, but molecular phylogenetic studies have shown that Neottia nidus-avis, the bird's-nest orchid, evolved within the same group, and all species of Listera have been moved to Neottia.

Neottia convallarioides is native to much of Canada and in parts of the United States (Alaska, the Great Lakes Region, New England, and the mountains of the West: Rockies, Cascades, Sierra Nevada, etc.). I also reportedly occurs in St. Pierre & Miquelon and on the Komandor Islands in the Bering Sea, part of the Russian Far East.

Neottia convallarioides is a plant of cool, moist, dim habitat, such as woods and forest, as well as swamps and streambanks. It is a rhizomatous perennial herb growing erect 10 to 35 centimeters tall. It has one pair of green oval leaves each up to 7 centimeters long near the base of the stem. The inflorescence is a small raceme of green or yellow-green flowers, sometimes slightly purple-tinged. Each has usually 3 reflexed lance-shaped sepals, 2 similar petals, and one petal known as the lip, which is longer, wedge-shaped, and notched at the tip. The plant sometimes forms large colonies, creating a groundcover. It is known to hybridize with Neottia auriculata.

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