Subfamily:
  Epidendroideae
Tribe:
  Arethuseae
Subtribe:
  Arethusinae
Genus: Arethusa:
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  • Alberta, Western Canada, Northern America
  • Manitoba, Northern America
  • Saskatchewan, Northern America
  • New Brunswick, Northern America
  • Newfoundland, Northern America
  • Nova Scotia, Northern America
  • Ontario, Northern America
  • Prince Edward I., Northern America
  • Québec, Northern America
  • Illinois, Northern America
  • Minnesota, Northern America
  • Wisconsin, Northern America
  • Connecticut, Northern America
  • Indiana, Northern America
  • Maine, Northern America
  • Massachusetts, Northern America
  • Michigan, Northern America
  • New Hampshire, Northern America
  • New Jersey, Northern America
  • New York, Northern America
  • Ohio, Northern America
  • Pennsylvania, Northern America
  • Rhode Island, Northern America
  • Vermont, Northern America
  • West Virginia, Northern America
  • Delaware, Northern America
  • Maryland, Northern America
  • North Carolina, Northern America
  • South Carolina, Northern America
  • Virginia, Northern America
  • Arethusa bulbosa f. subcaerulea E.L.Rand & Redfield (1894)
  • Arethusa bulbosa f. albiflora E.L.Rand & Redfield (1894)