Crocus 1a near Lake Kartsakhi, Georgia 170426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus 1b near Lake Kartsakhi, Georgia 170426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus 1g near Lake Kartsakhi, Georgia 170426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus 1h near Lake Kartsakhi, Georgia 170426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus carpetanus 1 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus carpetanus 3 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus cf speciosus 2 Lund Bot Garden 121001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus cf speciosus 5 Lund Bot Garden 121001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus danfordiae 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus danfordiae 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus danfordiae 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus danfordiae 4 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus kosaninii 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus kosaninii 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus minimus 2 Limbara, Sardinia, Italy 230421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus minimus 3 Limbara, Sardinia, Italy 230421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus minimus 5 Limbara, Sardinia, Italy 230421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus minimus 6 Limbara, Sardinia, Italy 230421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus minimus 7 Limbara, Sardinia, Italy 230421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus robertianus 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus robertianus 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus speciosus 4 Lund Sk 121020 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus vernus ssp albiflorus 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus 1c near Lake Kartsakhi, Georgia 170426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus 1d near Lake Kartsakhi, Georgia 170426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus 1e near Lake Kartsakhi, Georgia 170426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus 1f near Lake Kartsakhi, Georgia 170426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus carpetanus 2 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus cf speciosus 1 Lund Bot Garden 121001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus cf speciosus 3 Lund Bot Garden 121001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus cf speciosus 4 Lund Bot Garden 121001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus kosaninii 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus kosaninii 4 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus minimus 1 Limbara, Sardinia, Italy 230421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus minimus 4 Limbara, Sardinia, Italy 230421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus robertianus 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus sieberi Omalos, Crete 800514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus speciosus 1 Lund Sk 121020 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus speciosus 2 Lund Sk 121020 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus speciosus 3 Lund Sk 121020 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus vernus ssp albiflorus 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crocus vernus ssp albiflorus 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).