Iris 1b Lund Bot Garden 120405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 1c Lund Bot Garden 120405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 2b Rancho Santa Ana Botanic Garden, CA 130406 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 3b Lund Bot Garden 090320 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 3c Lund Bot Garden 090320 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 4b N of Polygyros, Greece 050526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 4c N of Polygyros, Greece 050526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 5b Puerto del Bujeo, Andalusia SP 120324 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 6b Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 6c Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris albicans 3 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris albicans 4 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 10 (cult from E of Mikri Prespa, North Greek mountains) Lund Sk 230312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 11 (cult from E of Mikri Prespa, North Greek mountains) Lund Sk 230312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 2 E of Mikri Prespa, North Greek mountains (cult Lund) 220304 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 7 (cult from E of Mikri Prespa, North Greek mountains) Lund Sk 230312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 8 (cult from E of Mikri Prespa, North Greek mountains) Lund Sk 230312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 9 (cult from E of Mikri Prespa, North Greek mountains) Lund Sk 230312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Iris bucharica 4 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris bucharica 5 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris bucharica 6 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf bulleyana 2 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf bulleyana 4 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf xiphium 2 Puerto del Bujeo, Andalusia SP 120324 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf xiphium 3 Puerto del Bujeo, Andalusia SP 120324 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf xiphium 4 Puerto del Bujeo, Andalusia SP 120324 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf xiphium 5 Puerto del Bujeo, Andalusia SP 120324 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris chinensis 3 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris chinensis 4 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris chinensis 5 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris chinensis 6 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cycloglossa (orig Afghanistan) Dept of Botany, Stockholm University 020418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris douglasiana 1 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris douglasiana 2 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris douglasiana 3 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris douglasiana 4 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris filifolia 1 Cádiz, Los Barrios, in front of La Montera del Torero, Andalucía Spain 220413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris filifolia 2 Cádiz, Los Barrios, in front of La Montera del Torero, Andalucía Spain 220413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris filifolia 3 Cádiz, Los Barrios, in front of La Montera del Torero, Andalucía Spain 220413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Iris histrioides 2 (cult) Brunnby Sk 150410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris histrioides 3 (cult) Brunnby Sk 150410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris histrioides 4 (cult) Brunnby Sk 150410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris japonica 1 Lund Bot Garden 090327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris japonica 2 Lund Bot Garden 090327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris japonica 3 Dept of Botany, Stockholm University 060221 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Iris latifolia 3 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris latifolia 4 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Iris longipetala 4 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris longipetala 5 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris longipetala 6 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris lutescens ssp lutescens 1 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris lutescens ssp lutescens 7 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris lutescens ssp lutescens 8 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 3 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 8 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris orientalis 2 Lund Bot Garden 140524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris orientalis 3 Lund Bot Garden 140524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris orientalis 4 Lund Bot Garden 130531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris orientalis 5 Lund Bot Garden 130531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris orientalis 6 Lund Bot Garden 130531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pallida ssp pallida 4 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pallida ssp pallida 5 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 1 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 10 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 2 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 7 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 8 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 9 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 2 Halltorp, Högsrum, Öland 080615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 3 Halltorp, Högsrum, Öland 080615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 5 E of Lund Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 6 E of Lund Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 7 E of Lund Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 8 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pumila 3 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pumila 4 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reichenbachii 4 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reticulata 3 Lund Bot Garden 140311 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Iris sibirica 10 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris sibirica 2 Viidumäe, Saaremaa, Estonia 100717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris sibirica 3 Viidumäe, Saaremaa, Estonia 100717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris sibirica 4 Viidumäe, Saaremaa, Estonia 100717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris sibirica 5 Viidumäe, Saaremaa, Estonia 100717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris sibirica 6 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 10 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 14 Knösen, Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 8 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 6 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 7 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 8 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 9 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris unguicularis ssp cretensis 3 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris variegata 10 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris variegata 11 Suatu, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris variegata 12 Suatu, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Iris variegata 4 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris variegata 7 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris variegata 8 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris variegata 9 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 1a Lund Bot Garden 120405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 2a Rancho Santa Ana Botanic Garden, CA 130406 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 3a Lund Bot Garden 090320 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 4a N of Polygyros, Greece 050526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 5a Puerto del Bujeo, Andalusia SP 120324 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 6a Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 7a Sicily 190419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 7b Sicily 190419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris 7c Sicily 190419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

Iris aphylla 4 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris aphylla 5 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris aphylla ssp hungarica 1 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris aphylla ssp hungarica 2 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 1 E of Mikri Prespa, North Greek mountains (cult Lund) 220304 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 3 (cult from E of Mikri Prespa, North Greek mountains) Lund Sk 230312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 4 (cult from E of Mikri Prespa, North Greek mountains) Lund Sk 230312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 5 (cult from E of Mikri Prespa, North Greek mountains) Lund Sk 230312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris attica 6 (cult from E of Mikri Prespa, North Greek mountains) Lund Sk 230312 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Iris bucharica 7 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf bulleyana 1 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf bulleyana 3 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf bulleyana 5 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf bulleyana 6 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf bulleyana 7 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf bulleyana 8 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf planifolia Tunisia 820113 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf sibirica Lund Bot Garden 130528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris cf xiphium 1 Puerto del Bujeo, Andalusia SP 120324 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris chinensis 1 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris chinensis 2 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris ensata 1 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris ensata 2 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris ensata 3 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris ensata 4 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris ensata 5 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris ensata 6 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Iris histrioides 1 (cult) Brunnby Sk 150410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Iris junonia 3 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris junonia 4 Copenhagen Bot Garden 140515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris junonia 5 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris kochii 1 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris kochii 2 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris kochii 3 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris latifolia 1 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris latifolia 2 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris leptophylla 1 Lund Bot Garden 160627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris leptophylla 2 Lund Bot Garden 160627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris leptophylla 3 Lund Bot Garden 160627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Iris lutescens ssp lutescens 2 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris lutescens ssp lutescens 3 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris lutescens ssp lutescens 4 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris lutescens ssp lutescens 5 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris lutescens ssp lutescens 6 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris lutescens ssp lutescens 9 Copenhagen Bot Garden 150421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 1 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 10 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Iris magnifica 12 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 13 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 14 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 2 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 4 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 5 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 6 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 7 DBV's Garden, Visby, Gotland 110508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris magnifica 9 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Iris orientalis 1 Lund Bot Garden 140524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pallida ssp pallida 1 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pallida ssp pallida 2 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pallida ssp pallida 3 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pallida ssp pallida 6 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pallida ssp pallida 7 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 3 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 4 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 5 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris planifolia 6 ESE Ronda, Andalusia Sp 120326 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 1 Halltorp, Högsrum, Öland 740629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 10 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 11 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 4 Halltorp, Högsrum, Öland 080615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pseudacorus 9 Gräsgård, Öland 150604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pumila 1 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pumila 2 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pumila 5 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pumila 6 Bergianska, Stockholm 050513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pumila 7 Vashlovani Nat. Park, Georgia 170424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pumila 8 Vashlovani Nat. Park, Georgia 170424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris pumila 9 Vashlovani Nat. Park, Georgia 170424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reichenbachii 1 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reichenbachii 2 Copenhagen Bot Garden 140424 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reichenbachii 3 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reichenbachii 5 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reichenbachii 6 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reichenbachii 7 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reichenbachii 8 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reticulata 1 Lund Bot Garden 140311 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris reticulata 2 Lund Bot Garden 140311 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Iris sibirica 1 Viidumäe, Saaremaa, Estonia 100717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris sibirica 7 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris sibirica 8 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris sibirica 9 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 1 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 11 Knösen, Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 12 Knösen, Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 13 Knösen, Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 2 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 3 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 4 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 5 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 6 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 7 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris spuria 9 Skanör Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 1 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 10 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 11 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 12 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 13 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 2 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 3 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 4 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris tuberosa 5 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris umbilicaria Ambelos Padroso, Samos, Greece 920508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris unguicularis ssp cretensis 1 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris unguicularis ssp cretensis 2 NE of Spili, Crete 110327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris unguicularis ssp cretensis 4 Kotsifou, Crete 110329 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris unguicularis ssp cretensis 5 Kotsifou, Crete 110329 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris unguicularis ssp cretensis 6 Kotsifou, Crete 110329 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Iris variegata 5 Bergianska 070607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris variegata 6 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris versicolor 1 Storrs, Connecticut 900613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris versicolor 2 Storrs, Connecticut 900613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris versicolor 3 Storrs, Connecticut 900613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Iris xiphium Bergianska, Stockholm 050513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).