Bromus 1a Santa Catalina Island, CA 130407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus 1b Santa Catalina Island, CA 130407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus 1c Santa Catalina Island, CA 130407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus 1d Santa Catalina Island, CA 130407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus 1e Santa Catalina Island, CA 130407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus 1f Santa Catalina Island, CA 130407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus 1g Santa Catalina Island, CA 130407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 10 Vallkärra Sk 150720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 11 Vallkärra Sk 150720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 12 Kungstorp, Stora Hammar Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 2 Lund Sk 940713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 5 Vallkärra Sk 150720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 6 Vallkärra Sk 150720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 8 Vallkärra Sk 150720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 9 Vallkärra Sk 150720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus benekenii 5 Col de la Croix Perrin FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus benekenii 7 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus benekenii 8 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus benekenii Gärdslöv Sk 060809 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Bromus biebersteinii 6 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus cf arvensis near Galleo, N Spain 180526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus cf japonicus 1 near Lake Mikri Prespa, N Greece 180629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus cf japonicus 2 near Lake Mikri Prespa, N Greece 180629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus cf japonicus 3 near Lake Mikri Prespa, N Greece 180629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus cf racemosus 1 (growing as a weed) Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus cf racemosus 2 (growing as a weed) Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus cf racemosus 3 (growing as a weed) Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus cf squarrosus 2 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 10 Tureni, Romania 090614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 11 Tureni, Romania 090614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 16 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 17 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 18 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 19 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 21 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 22 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 9 Tureni, Romania 090614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus diandrus 1 Petra, Lesvos, Greece 100516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Bromus inermis 3 Lund Sk 120702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus inermis 4 Lund Sk 120702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus inermis 5 Lund Sk 120702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus inermis 6 Lund Sk 120702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus madritensis 1 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus madritensis 2 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus madritensis 3 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus madritensis 4 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus madritensis 5 Pefkochori, Greece 050524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus pectinatus 1 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus pectinatus 2 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus pectinatus 3 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus pectinatus 4 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus pectinatus 5 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 11 the Katara Pass, N Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 12 the Katara Pass, N Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 13 the Katara Pass, N Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 5 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 6 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 7 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus ramosus 1 Möns Klint, Mön DK 080824 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus ramosus 2 Alvena Lindaränge, Vallstena, Gotland 070802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus ramosus 3 Möns Klint, Mön DK 080824 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 10 Mölle, Brunnby Sk 170820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 2 Mölle, Brunnby, Skåne 950722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 6 Mölle, Brunnby Sk 160604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 7 Mölle, Brunnby Sk 170611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 9 Mölle, Brunnby Sk 170820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 1 S of Zidina, Latvia 060709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 11 Lund 240720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 12 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 12 Lund 240720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 13 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 13 Lund 240720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 14 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 14 Lund 240720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 15 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 16 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 17 W of Änges, Burs, Gotland 910730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 18 Värpinge, Lund Sk 180611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 19 Värpinge, Lund Sk 180611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 20 Värpinge, Lund Sk 180611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 21 Värpinge, Lund Sk 180611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 22 Värpinge, Lund Sk 180611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 6 S of Zidina, Latvia 060709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 7 S of Zidina, Latvia 060709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sitchensis 4 Lund Sk 140603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sitchensis 5 Lund Sk 140603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sitchensis 6 Lund Sk 140603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sitchensis 7 Lund Sk 140603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sitchensis 8 Lund Sk 140603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sterilis 2 Lilla Hammar, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sterilis 3 Lilla Hammar, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sterilis 5 Lilla Hammar, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sterilis 6 Lilla Hammar, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sterilis 7 Lilla Hammar, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sterilis 8 Lilla Hammar, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus tectorum 1 Lund Sk 120702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus tectorum 2 Lund Sk 120702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus willdenowii 1 Lund Bot Garden 140925 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus willdenowii 2 Lund Bot Garden 140925 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus willdenowii 3 Lund Bot Garden 140925 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus willdenowii 4 Lund Bot Garden 140925 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus willdenowii 6 Nordhavnstippen, Köbenhavn 930918 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 1 Lund Sk 940713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 13 Kungstorp, Stora Hammar Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 14 Kungstorp, Stora Hammar Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 15 Kungstorp, Stora Hammar Sk 160812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 3 Vallkärra Sk 150720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 4 Vallkärra Sk 150720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus arvensis 7 Vallkärra Sk 150720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus benekenii 1 Col de la Croix Perrin FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus benekenii 2 Col de la Croix Perrin FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus benekenii 3 Col de la Croix Perrin FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus benekenii 4 Col de la Croix Perrin FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus benekenii 6 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Bromus cf squarrosus 1 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 1 Säby, Skåne 940611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 12 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 13 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 14 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 15 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 2 Säby, Skåne 940611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 20 Degerhamn, Södra Möckleby, Öland 150606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 3 Säby, Skåne 940611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 4 Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 5 Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 6 between Ntipi and Larisos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 7 between Ntipi and Larisos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus commutatus 8 between Ntipi and Larisos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus diandrus 2 Petra, Lesvos, Greece 100516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus diandrus 3 Petra, Lesvos, Greece 100516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus erectus 1 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus erectus 2 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus erectus 3 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus erectus 4 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus erectus 5 Everöd Sk 140601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus erectus 6 E of Tingstäde, Gotland 940626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus erectus 7 Näsbyfältet, Kristianstad Sk 150628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus erectus 8 Näsbyfältet, Kristianstad Sk 150628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus erectus 9 Näsbyfältet, Kristianstad Sk 150628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus hordeaceus 1 Hammars backar Sk 120526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus hordeaceus 2 Hammars backar Sk 120526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus hordeaceus 3 Hammars backar Sk 120526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus hordeaceus 4 Hammars backar Sk 120526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus inermis 1 Lund Sk 120702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus inermis 2 Lund Sk 120702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus lanceolatus 1 Bjärred, Skåne 940717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus lanceolatus 2 Bjärred, Skåne 940717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus lanceolatus 3 Bjärred, Skåne 940717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus lepidus 1 SW of Dörröd, Blentarp, Skåne 920609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus lepidus 2 SW of Dörröd, Blentarp, Skåne 920609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 1 Bingsmarken, Östra Vemmenhög, Skåne 920604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 10 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 2 Bingsmarken, Östra Vemmenhög, Skåne 920604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 3 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 4 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 8 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus racemosus 9 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus ramosus 4 Möns Klint, Mön DK 080824 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 1 Mölle, Brunnby, Skåne 950722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 11 Mölle, Brunnby Sk 170820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 12 Mölle, Brunnby Sk 170820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 3 Mölle, Brunnby Sk 160604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 4 Mölle, Brunnby Sk 160604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 5 Mölle, Brunnby Sk 160604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rigidus 8 Mölle, Brunnby Sk 170611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rubens 1 near Trujillo SP 140509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rubens 2 near Trujillo SP 140509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rubens 3 near Trujillo SP 140509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rubens 4 near Trujillo SP 140509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rubens 5 near Trujillo SP 140509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus rubens 6 above Seki, near Syedra, Turkey 090410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus scoparius 1 NE of Skalochori, Lesvos, Greece 100510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus scoparius 2 NE of Skalochori, Lesvos, Greece 100510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 10 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 11 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 2 S of Zidina, Latvia 060709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 3 S of Zidina, Latvia 060709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 4 S of Zidina, Latvia 060709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 5 S of Zidina, Latvia 060709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 8 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus secalinus 9 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sitchensis 1 Lund Sk 140603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sitchensis 2 Lund Sk 140603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sitchensis 3 Lund Sk 140603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus squarrosus above Pefkochori, Greece 050527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sterilis 1 Lilla Hammar, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus sterilis 4 Lilla Hammar, Stora Hammar Sk 130608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Bromus willdenowii 5 Lund Bot Garden 140925 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).