Orchid of undergrowth generally but it will sometimes be found in full light anyway. The species is common everywhere in France and at all altitudes. Very easy to identify by its inflorescence and its two large oval leaves in opposition. The flowers have green colorations, sometimes almost yellowish and can be tinged with purple traces. The shape of the labellum shows significant variations in shape but the general appearance remains typical.

The plant measures from 10 to 60 cm. The flower stalk can sometimes take curved shapes.

The secret flower of nectar to attract pollinators.

Flowering extends over a long period from the beginning of May until July depending on the department and altitude.