Platanthera ciliaris

It grows in "acid soil of hillside seepage bogs" in the longleaf pine landscapes of the Gulf Coast of the United States.

[1] Like many species in these habitats, including flatwoods, it is dependent upon recurring fire to create open conditions.

[2][self-published source] Further north it is found in bogs, but even here it may be dependent upon fire to create open conditions.

[1] The species is at risk in some areas from loss of habitat and collecting.

[3] It has been recorded from extreme southern Ontario, but is now thought to be extirpated.