Bernard Castelein / Eggleaf twayblade (Listera ovata), Klein Schietveld, Brasschaat, belgium. May

Guy Edwardes / Common Twayblade (Listera ovata), Powerstock Common Reserve, Dorset, England, UK.

Bernard Castelein / Eggleaf twayblade(Listera ovata), Klein Schietveld, Brasschaat, Belgium. May

Bernard Castelein / Eggleaf twayblade (Listera ovata), Klein Schietveld, Brasschaat, Belgium. May

Lorraine Bennery / Bee-fly (Bombylius sp.) on Twayblade orchid (Listera ovata), Corbieres, France, May.

Paul Harcourt Davies / Twayblade (Listera ovata) in flower, Camosiara, Pescasseroli, Abruzzo, Italy, June.

Paul Harcourt Davies / Twayblade orchid (Listera ovata) near Leonessa, Umbria, Italy June.

Philippe Clement / Common Twayblade orchid (Neottia ovata) in flower, Pyrenees, France, June

Colin Varndell / Close-up of Common twayblade orchid (Neottia ovata) Dorset, UK, May

Michel Poinsignon / Twayblade orchid (Neottia ovata) Montenach Lorraine, France, May.

Robert Thompson / Common twayblade {Neottia ovata} flowers, Brookeborough Quarry (disused), County Fermanagh, Northern Ireland, UK, June

Robert Thompson / Common twayblade {Neottia ovata} Brookeborough Quarry (disused), County Fermanagh, Northern Ireland, UK, June