Not an accepted name (status: unknown). The accepted name is Epipactis helleborine subsp. tremolsii (Pau) E.Klein, 1979.

Epipactis helleborine subsp. densifolia (W.Hahn, Passin & R.Wegener) Kreutz, 2005 2% complete

No common name

Eurorchis 17: 105 (2005)

There is no corrections for Epipactis helleborine subsp. densifolia yet.