R.M.Bateman (Rand.Morgan & Glic.) 2003 - Bateman RM, Hollingsworth PM, Preston J, Yi-Bo L, Pridgeon AM, Chase MW (2003) Molecular phylogenetics and evolution of Orchidinae and selected Habenariinae (Orchidaceae). Botanical Journal of the Linnean Society 142(1): 1-40. doi: 10.1046/j.1095-8339.2003.00157.x.
There is no corrections for Platanthera elegans subsp. decurtata yet.