Platanthera ciliaris, commonly known as the yellow fringed orchid yellow-fringed orchid, or orange-fringed orchid, is a large and showy species of orchid. It grows in "acid soil of hillside seepage bogs" in the longleaf pine landscapes of the Gulf Coast. Like many species in these habitats, including flatwoods, it is dependent upon recurring fire to create open conditions. Further north it is found in bogs, but even here it may be dependent upon fire to create open conditions. 
It is pollinated by large butterflies, mostly swallowtails.
The species is at risk in some areas from loss of habitat and collecting. For example, it is endangered in Michigan. It has been recorded from extreme southern Ontario, but is now thought to be extirpated.
- Liggio, J. and Liggio, A.O. 1999. Wild Orchids of Texas. University of Texas Press, Austin. 228 p.
- Keddy, Paul A. (2008). Water, Earth, Fire: Louisiana's Natural Heritage. Philadelphia: Xlibris. p. 229. ISBN 978-1-4363-6234-4.
- M.R. Penskar and S.R. Crispin. 2004. Special plant abstract for Platanthera ciliaris (yellow fringed-orchid). Michigan Natural Features Inventory. Lansing, MI. 3 pp
- Oldham, M.J., and S.R. Brinker. 2009. Rare Vascular Plants of Ontario, Fourth Edition. Natural Heritage Information Centre, Ontario Ministry of Natural Resources. Peterborough, Ontario. 188 pp
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