Gymnadenia x heufleri a hybrid between Gymnadenia odoratissima x Gymnadenia rheliicani . When G rhellicanai was recognised as Nigritella rhellicani this hybrid was called Gymnigritella x heufleri. Such hybrids can be found where the Alpjne fragrant orchid (Gymnadenia odoratissima) and the dark vanilla orchid (G. rhellicani). The name Nigritella nigra was formely used to embrace a number of species...the most frequently encountered is G, rhellicana. Val di Fassa, Dolomites. June 2019