Jussi Murtosaari / Calypso orchid (Calypso bulbosa) in woodland habitat, Lapland, Finland, June.

Jussi Murtosaari / Calypso orchid (Calypso bulbosa) Lapland, Finland, June.

Shattil & Rozinski / Fairy slipper orchid {Calypso bulbosa} close up of flower, USA

Shattil & Rozinski / Fairy slipper orchid {Calypso bulbosa} close up of flower, USA

Shattil & Rozinski / Fairy slipper orchids {Calypso bulbosa} flowering in woodland, Colorado, USA

Jose Schell / Fairy Slipper Orchid (Calypso Bulbosa) white form, Gulf of St. Lawrence, Canada

Jose Schell / Fairy slipper orchid (Calypso bulbosa) Anticosti Islands, Quebec Province, Canada

Bengt Lundberg / Two Fairy slipper orchids (Calypso bulbosa) in flower, Sweden

Shattil & Rozinski / Fairy slipper orchids {Calypso bulbosa} Colorado, USA

Shattil & Rozinski / Fairy slipper orchids {Calypso bulbosa} Colorado, USA

Jim Brandenburg / Winter Marsh Mosquito (Culiseta inornata) on Fairy Slipper Orchid (Calypso bulbosa), Minnesota

Jose Schell / Fairy slipper orchid (Calypso bulbosa). Anticosti Is, Quebec Province, Canada

Benjamin Olson / Fairy Slipper Orchid (Calypso bulbosa) flower, Ely, Minnesota

Benjamin Olson / Fairy Slipper Orchid (Calypso bulbosa) flower in old growth Northern White Cedar (Thuja occidentalis) forest, northern Minnesota

Mike Read / Calypso orchid (Calypso bulbosa) growing in woodland, Yellowstone National Park, Wyoming, USA, June.