Delforge, P. 2017.- Que devient en 2017 un Epipactis helleborine (L.) Crantz. robuste après une transplanttaion réussie, effectuée en 2011? Natural. belges 98 (Orchid. 30): 62-68.

Abstract. Delforge, P. 2017.- What has become of a robust individual of Epipactis helleborine (L.) Crantz. after a successful transplantation made in 2011 ? Natural. belges 98 (Orchid. 30): 62-68.
The history and the context of the descriptions of two spindly and rather late taxons, Epipactis helleborine var. minor and Epipactis helleborine subsp. moratoria, are briefly evoked. It was already demonstrated (Delforge 2016A) that the characters put forward for the distinction of “minor”and “moratoria” in comparison with E. helleborine s. str. are inconstant, uncertain and thus not diagnostic. One more year of observation of a robust individual after a successful transplantation shows again that (1) the spindly aspect of the whole plant may fluctuate during several consecutive years, (2) the number, size and colours of leaves and flowers, the pending or horizontal position of the fruiting capsules seem to appear rather randomly and are morphological expressions of E. helleborine s. str., (3)  this morphological expressions, as well as the flowering period, depend notably on the effectiveness of the mycorrhiza, an important component of the mixotrophic Epipactis autecology, but also on the amount of winter and spring rainfall.

Key-Words:
Orchidaceae; Epipactis, Epipactis helleborine, Epipactis helleborine var. helleborine f. minor  (Engel) P. Delforge. Morphology and dynamics after transplantation.