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

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 / Orchid {Neottia cordata} Glengarriff NNR, County Cork, Republic of Ireland, 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

Wild Wonders of Europe / Benvie / Common twayblade (Neottia ovata) in flower, Fliess, Naturpark Kaunergrat, Tirol, Austria, July 2008

Roy Mangersnes / Lesser Twayblade (Neottia cordata) a very small orchid on upland bogs, Norway. June

Ross Hoddinott / Common twayblade {Neottia ovata}, Beechwood haymeadow, Dartmoor, Devon, UK. June

Simon Colmer / Twayblade orchid flower (Neottia ovata) UK

Ross Hoddinott / Common tway blade orchid flowers (Neottia ovata) Devon, UK.

Ross Hoddinott / Common tway blade orchid (Neottia ovata). Devon, UK.

Geoff Scott-Simpson / Twayblade orchid flowering {Neottia ovata} Derbyshire, UK

Nigel Bean / Twayblade orchid (Neottia ovata). Kent, England, UK, Europe

Duncan Usher / Bird's Nest Orchid (Neottia nidus-avis) gains nutrients from fungus which lives in its roots, Europe

Niall Benvie / Heart leaved Twayblade orchid {Neottia cordata} Scotland, UK

Geoff Scott-Simpson / Twayblade orchids {Neottia ovata} Derbyshire, UK

Paul Hobson / Twayblade orchid {Neottia ovata} Yorkshire, UK

Nigel Bean / Common twayblade orchid (Neottia ovata), Kent, UK

Christian Ziegler / Bird's Nest Orchid (Neottia nidus-avis) receives nutrients from fungus symbionts, Lake Constance, Germany