This May, Lindsay and I came across a single flowering plant of Liparis loeselii in a shrubby old-field on our property in northern Indiana.
Liparis loeselii is an inconspicuous orchid found in states and provinces throughout the northeastern half of North America. However, it is listed as a species of conservation concern in seven states, and most occurences of the species are from areas around the Great Lakes and New England states. Although most of the documented habitats from which Liparis loeselii is known are calcareous wetlands (such as fens, pannes, sedge meadows, marshes, marly lake margins, forested seeps, and wet peaty or sandy meadows), it is sometimes found in the more acidic conditions of bogs, and it also occurs in previously open and disturbed areas that are naturally becoming reforested. Such is the case on our property.
For my account of finding this species on our property, see my recent post at Through Handlens and Binoculars.