Dicentra canadensis 1 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra cucullaria 3 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 3 Lund Bot Garden 080505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 7 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 8 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra canadensis 2 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra cucullaria 1 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra cucullaria 2 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra cucullaria 4 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra cucullaria 5 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra cucullaria 6 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 1 Lund Bot Garden 120504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 10 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 2 Lund Bot Garden 120504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 4 Lund Bot Garden 080505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 5 Lund Bot Garden 120504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 6 Lund Bot Garden 120504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Dicentra formosa 9 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).