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.

Adrian Davies / Common twayblade orchid (Listera ovata) in flower, Surrey, UK. June. Focus stacked.

Neil Aldridge / Tilt-up shot revealing Common twayblade (Neottia ovata) flowers, Wiltshire, UK, June.

Neil Aldridge / Slider shot of Common twayblade (Neottia ovata) flowers, Wiltshire, UK, June.

Nick Upton / Common twayblade (Neottia ovata) in chalk grassland, Northeast Somerset, England, UK. May.

Nick Upton / Common twayblade (Neottia ovata) close up. Northeast Somerset, England, UK. May.

Linda Pitkin / Commont wayblade (Neottia ovata), spikes developing, Howell Hill SWT Nature Reserve, Surrey, England, May.