Noccaea caerulescens ssp caerulescens 3 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea perfoliata 5 Silvåkra, Sk 090424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea praecox 1 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea praecox 2 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea praecox 3 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea praecox 4 Copenhagen Bot Garden 080710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea rotundifolia 1 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea rotundifolia 4 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea rotundifolia 5 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea rotundifolia 6 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea tymphaea 10 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea tymphaea 4 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Noccaea 1a Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea 1b Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea caerulescens ssp caerulescens 1 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea caerulescens ssp caerulescens 1 Sularp, Hardeberga, Skåne 780422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea caerulescens ssp caerulescens 2 Copenhagen Bot Garden 140312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea caerulescens ssp caerulescens 2 Ågestasjön, Södermanland 880512 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea caerulescens ssp caerulescens 6 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea caerulescens ssp caerulescens 7 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea cf caerulescens 1 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea cf caerulescens 2 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea cf caerulescens 3 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea cf caerulescens 4 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea cf caerulescens 5 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea ochroleuca 1 SE of Megali Limni, Lesvos, Greece 100515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea ochroleuca 2 SE of Megali Limni, Lesvos, Greece 100515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea perfoliata 1 Silvåkra, Sk 090424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea perfoliata 2 Silvåkra, Sk 090424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea perfoliata 3 Silvåkra, Sk 090424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea perfoliata 4 Silvåkra, Sk 090424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea praecox 5 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea praecox 6 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea praecox 7 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea rotundifolia 2 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea rotundifolia 3 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea tymphaea 1 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea tymphaea 11 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea tymphaea 2 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Noccaea tymphaea 3 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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