Rosa 1a Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa 1b Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa 1c Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa 2a near Lijiang, Yunnan 110707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa 2b near Lijiang, Yunnan 110707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa 3a Osmarken, Skivarp, Skåne 040629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa 3b Osmarken, Skivarp, Skåne 040629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa 4 near Lijiang, Yunnan 110707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa acicularis Kalkstenskärr, Skellefteå, Västerbotten 870713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa agrestis 1 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa agrestis 2 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa agrestis 3 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa agrestis Balsviks kalkkbrott, Österslöv, Skåne 930627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa balsamica 1 Stenshuvud, Södra Mellby Sk 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa balsamica 2 Stenshuvud, Södra Mellby Sk 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa balsamica 3 Stenshuvud, Södra Mellby Sk 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa balsamica 4 Stenshuvud, Södra Mellby Sk 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa balsamica 5 Stenshuvud, Södra Mellby Sk 080602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa canina ssp canina 1 NE of Husby-Sjuhundra, Uppland 980710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa canina ssp canina 2 Rödlöga, Uppland 840707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa canina ssp canina 3 Höllviken Sk 100626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa canina ssp canina 4 SW of Lögstrup, Jylland DK 160614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa canina ssp canina 5 SW of Lögstrup, Jylland DK 160614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa canina ssp canina 6 Limhamn Sk 160829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa canina ssp canina 7 Limhamn Sk 160829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa canina ssp canina 8 Limhamn Sk 160829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf micrantha 1 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf micrantha 3 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf sherardii 1 Munktorp, Roslags-Kulla, Uppland 050823 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf sherardii 2 Munktorp, Roslags-Kulla, Uppland 050823 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf tsinglingensis 2 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf tsinglingensis 3 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf tsinlingensis 4 Lund Bot Garden 150623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf tsinlingensis 5 Lund Bot Garden 150623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf tsinlingensis 6 Lund Bot Garden 150623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf tsinlingensis 7 Lund Bot Garden 150623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf tsinlingensis 8 Lund Bot Garden 150623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf tsinlingensis 9 Lund Bot Garden 150623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa dumalis ssp dumalis 1 Lund Sk 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa dumalis ssp dumalis 2 Lund Sk 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa dumalis ssp dumalis 3 Lund Sk 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa dumalis ssp dumalis 5 Lund Sk 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa dumalis ssp dumalis 6 Lund Sk 130919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa gallica 1 Hosszúhetény, Nagy-mezö, Hungary 240508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa gallica 2 Hosszúhetény, Nagy-mezö, Hungary 240508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa gallica 3 Hosszúhetény, Nagy-mezö, Hungary 240508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa gallica 4 Hosszúhetény, Nagy-mezö, Hungary 240508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa glutinosa 1 Lund Bot Garden 121016 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa glutinosa 2 Lund Bot Garden 121016 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa glutinosa 3 Lund Bot Garden 121016 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa glutinosa 4 Lund Bot Garden 121016 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa hackeliana 1 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa hackeliana 2 Copenhagen Bot Garden 130913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa hemsleyana 1 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa hemsleyana 2 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa hemsleyana 3 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa hemsleyana 5 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa hemsleyana 6 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 1 ( - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 1 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 10 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 11 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 2 ( - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 2 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 3 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 4 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 5 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 6 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 7 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 8 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa inodora 9 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa laxa 1 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa laxa 2 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa laxa 3 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa laxa 6 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 1 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 2 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 3 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 4 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 5 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 6 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 7 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 8 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa majalis 1 Prästberget E of Hammarforsen, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa majalis 2 Prästberget E of Hammarforsen, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 1 Mikri Limni, Lesvos, Greece 100511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 1 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 10 Lyckå, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 11 Lyckå, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 12 Lyckå, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 13 Lyckå, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 14 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 15 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 16 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 17 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 18 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 19 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 2 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 20 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 21 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 3 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 4 Mikri Limni, Lesvos, Greece 100511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 4 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 5 Mikri Limni, Lesvos, Greece 100511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 5 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 6 Lyckå, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 6 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 7 Lyckå, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 7 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 8 Lyckå, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 8 Skivarp Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 9 Lyckå, Blekinge 110813 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa moyesii 1 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa moyesii 2 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa moyesii 3 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa moyesii 4 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multibracteata 1 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multibracteata 2 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multibracteata 3 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multibracteata 4 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multibracteata 5 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multibracteata 6 Lund Bot Garden 121016 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multibracteata 7 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multibracteata 8 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multibracteata 9 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa multiflora Storrs, Connecticut 900617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 1 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 10 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 2 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 3 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 4 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 5 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 6 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 7 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 8 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 9 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pendulina 1 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pendulina 2 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pendulina 3 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pendulina 5 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pendulina 6 (cult) Sölvesborg, Blekinge 150608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pendulina 7 (cult) Sölvesborg, Blekinge 150608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pendulina 8 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa persica 1 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa persica 2 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa persica 4 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa persica 5 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa persica 6 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa persica 7 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pulverulenta Copenhagen Bot Garden 080710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa roxburghii 2 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa roxburghii 3 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa roxburghii 4 Lund Bot Garden 150615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa roxburghii 5 Lund Bot Garden 150615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa roxburghii 6 Lund Bot Garden 150615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa roxburghii 7 Lund Bot Garden 150615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 10 Skanörs Ljung Sk 131006 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 11 Skanörs Ljung Sk 131006 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 12 Skanörs Ljung Sk 131006 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 13 Skanörs Ljung Sk 131006 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 4 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 5 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 6 Skanörs Ljung Sk 130901 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 8 Skanörs Ljung Sk 131006 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 9 Skanörs Ljung Sk 131006 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rugosa 1 Höllviken Sk 120623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rugosa 2 Höllviken Sk 120623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rugosa 3 Höllviken Sk 120623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rugosa 4 Höllviken Sk 120623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rugosa 5 Höllviken Sk 120623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rugosa 6 Höllviken Sk 070811 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sempervirens 1 above Pefkochori, Greece 050527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sempervirens 2 above Pefkochori, Greece 050527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 10 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 11 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 13 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 3 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sherardii 1 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sherardii 2 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sherardii 3 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sherardii 4 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sherardii 5 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sherardii 6 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sherardii 7 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sherardii 8 Möns Klint, Mön DK 160529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 1 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 10 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 11 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 12 Lild Strand, Jylland DK 160613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 13 Lild Strand, Jylland DK 160613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 2 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 4 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 5 Römö, Denmark 950806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 6 Römö, Denmark 950806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 7 (cult) Höllviken Sk 130901 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 8 (cult) Höllviken Sk 130901 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 9 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 1 Ramslid, Slimminge Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 10 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 11 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 12 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 13 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 14 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 15 Ramslid, Slimminge Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 16 Ramslid, Slimminge Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 17 Lund Bot Garden (from Ramslid, Slimminge Sk) 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 18 Lund Bot Garden (from Ramslid, Slimminge Sk) 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 19 Lund Bot Garden (from Ramslid, Slimminge Sk) 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 2 Ramslid, Slimminge Sk 160919 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 20 Lund Bot Garden (from Ramslid, Slimminge Sk) 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 21 Lund Bot Garden (from Ramslid, Slimminge Sk) 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 22 Lund Bot Garden (from Ramslid, Slimminge Sk) 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 23 Lund Bot Garden (from Ramslid, Slimminge Sk) 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 24 Lund Bot Garden (from Ramslid, Slimminge Sk) 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 25 Lund Bot Garden (from Ramslid, Slimminge Sk)n 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 26 Lund Bot Garden (from Ramslid, Slimminge Sk) 220616 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 6 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 7 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 8 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 9 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tsinlingensis 1 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tsinlingensis 2 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tsinlingensis 3 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa 2 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp mollis 1 Hällarp, Ljungby, Halland 140528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp mollis 2 Hällarp, Ljungby, Halland 140528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp mollis 3 Hällarp, Ljungby, Halland 140528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp mollis 4 Ardre, Gotland 040702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp mollis 5 Bergshamra, Solna, Uppland 030922 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp mollis 6 S of Rubjerg Knude, Rubjerg Klitplantage, Jylland DK 160613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp mollis 7 S of Rubjerg Knude, Rubjerg Klitplantage, Jylland DK 160613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp mollis 8 S of Rubjerg Knude, Rubjerg Klitplantage, Jylland DK 160613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp mollis 9 S of Rubjerg Knude, Rubjerg Klitplantage, Jylland DK 160613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp villosa 1 N of Trolle-Ljungby castle, Skåne 940710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa ssp villosa 2 N of Trolle-Ljungby castle, Skåne 940710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 1 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 2 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 3 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 4 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 5 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 6 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 7 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 8 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 9 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 10 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 4 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 5 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 6 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 7 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf micrantha 2 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa cf tsinglingensis 1 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa dumalis ssp dumalis 4 Lund Sk 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa dumalis ssp dumalis 7 Bergianska 060913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa elliptica ssp inodora Osmarken, Skivarp, Skåne 040629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa hemsleyana 4 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa laxa 4 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa laxa 5 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 10 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa macrophylla 9 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 2 Mikri Limni, Lesvos, Greece 100511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa micrantha 3 Mikri Limni, Lesvos, Greece 100511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa moyesii 5 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa moyesii 6 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa nutkana 11 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pendulina 4 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa pendulina 9 between Villar d'Arène and Col du Lautaret FR 150707 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa persica 3 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa roxburghii 1 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 1 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 2 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 3 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa rubiginosa 7 Skanörs Ljung Sk 130901 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 1 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 12 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 2 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 4 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 5 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 6 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 7 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 8 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa sericea ssp omeiensis 9 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa spinosissima 3 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 1 Stenberget, Skåne 040629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 2 Stenberget, Skåne 040629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 4 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa tomentosa 5 Slimminge Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa 1 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa 3 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa 4 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa 5 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa villosa 6 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa virginiana 10 Lund Bot Garden 140918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa willmottiae 1 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa willmottiae 2 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 1 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 2 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 3 Lund Bot Garden 130612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 8 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Rosa woodsii 9 Lund Bot Garden 080926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).