One of the most beautiful orchids in France due to its very "tropical" or exotic appearance. The floral elements of Epipactis are complex and sometimes very colorful. But the flowering of the majority of species is often late (from June to August) and for many species takes place in the undergrowth. They are therefore not very noticeable at this relatively late time.

New species are discovered (or named) regularly in Europe. The genus Epipactis is also very widespread in the northern hemisphere. Species hybridize easily within the genus, which will sometimes complicate identification.

For Epipactis palustris, confusion is almost impossible: it is found in a humid environment (possibly flooded part of the year), the fairly numerous flowers are generally hanging but open. The labellum is quite long with a beautiful white ending. The pubescent foot measures from 20 to 60 cm with a few more or less sheathing leaves at the base.

The species is relatively rare but when the biotope suits it, its dissemination can be rapid and the plants very abundant. This species is naturally visited by very many pollinating insects.

In Epipactis, the labellum is divided into two parts: the hypochile, concave, contains more or less nectar, which gives it a shiny appearance, and the epichile, often pointed, sometimes folded, with a complex appearance, rarely smooth and covered with bumps, hollows or furrows that allow insects to cling while they draw nectar. Petals and sepals are generally of the same color, more or less greenish. The pollinia, once stuck on the head of the insect, slowly disintegrate, which allows several flowers to be fertilized.