Vinca cf major Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca difformis 2 Soller Jardin Botanico, Mallorca 110419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca difformis 3 Monte San Antón, Andalucía Spain 220412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca difformis 4 Monte San Antón, Andalucía Spain 220412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca difformis 5 Monte San Antón, Andalucía Spain 220412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca difformis 6 Torcal de Antequera, Andalucía Spain 220418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca difformis 7 Torcal de Antequera, Andalucía Spain 220418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca herbacea 1 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca herbacea 1 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca herbacea 2 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca herbacea 2 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca herbacea 3a Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca minor 1 (cult) Lund Sk 130902 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca minor 2 (cult) Lund Sk 130902 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca minor 3 (cult) Lund Sk 130902 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca minor 4 Eagle Gorge Nat. Park, Georgia 170425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca minor 5 Eagle Gorge Nat. Park, Georgia 170425 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Vinca difformis 1 Soller Jardin Botanico, Mallorca 110419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).