Platanthera dilatata

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Platanthera dilatata


Taxonavigation: Asparagales 
Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Ordo: Asparagales

Familia: Orchidaceae
Subfamilia: Orchidoideae
Tribus: Orchideae
Subtribus: Orchidinae
Genus: Platanthera
Species: Platanthera dilatata
Varietates: (3)
P. dilatata. var. albiflora – P. dilatata. var. dilatata – P. dilatata. var. leucostachys


Platanthera dilatata (Pursh) Lindl. ex L.C.Beck, Bot. North. Middle States: 347 (1833)


  • Basionym
    • Orchis dilatata Pursh, Fl. Amer. Sept. 2: 588 (1813)
  • Homotypic
    • Habenaria dilatata (Pursh) Hook., Exot. Fl. 1: t. 95 (1823)
    • Platanthera hyperborea subsp. dilatata (Pursh) Rchb.f. in H.G.L.Reichenbach, Icon. Fl. Germ. Helv. 13-14: 126 (1851)
    • Limnorchis dilatata (Pursh) Rydb. in N.L.Britton, Man. Fl. N. States: 294 (1901)
    • Platanthera hyperborea var. dilatata (Pursh) Kraenzl., Orchid. Gen. Sp.: 642 (1901)
    • Piperia dilatata (Pursh) Szlach. & Rutk., Acta Bot. Fenn. 169: 380 (2000)


Native distribution areas:
  • Asia-Temperate
    • Russian Far East
      • Kamchatka.
  • Northern America
    • Subarctic America
      • Aleutian Islands, Alaska, Greenland, Nunavut, Northwest Territories, Yukon.
    • Western Canada
      • Alberta, British Columbia, Manitoba, Saskatchewan.
    • Eastern Canada
      • Labrador, New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Isle, Québec.
    • Northwestern U.S.A.
      • Colorado, Idaho, Montana, Oregon, Washington, Wyoming.
    • North-Central U.S.A.
      • Illinois, Minnesota, Wisconsin.
    • Northeastern U.S.A.
      • Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Pennsylvania, Vermont.
    • Southwestern U.S.A.
      • California, Nevada, Utah.
    • South-Central U.S.A.
      • New Mexico.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition


Primary references[edit]

  • Beck, L.C. 1833. Botany of the Northern and Middle States, or, A description of the plants found in the United States, north of Virginia, arranged according to the natural system, with a synopsis of the genera according to the Linnaean system— a sketch of the rudiments of botany, and a glossary of terms. 471 pp. Printed by Webster and Skinners, Albany. BHL Reference page


Vernacular names[edit]

English: Tall white bog orchid

For more multimedia, look at Platanthera dilatata on Wikimedia Commons.