Trifolium 1a Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 2a E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 2b E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 2c E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium alpestre 10 near Galleo, N Spain 180526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 11 near Galleo, N Spain 180526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 12 near Galleo, N Spain 180526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 15 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 3 Djuplunde, Västerhejde, Gotland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 4 Djuplunde, Västerhejde, Gotland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 5 Djuplunde, Västerhejde, Gotland 130615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 8 Djuplunde, Västerhejde, Gotland 940620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpinum 1 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpinum 3 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 1 Höllviken Sk 130620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 10 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 11 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 2 Höllviken Sk 130620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 7 Skanör Sk 130609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium aureum 1 Öja, Södermanland 850720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium aureum 4 Imatra Mills FI 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium badium 1 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium badium 2 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium badium 3 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium badium 7 Zdiar, Slovakia 950629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Trifolium campestre 1 Ottenby, Öland 080606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium campestre 2 Ottenby, Öland 080606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium campestre 6 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium campestre 7 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium campestre 8 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium canescens 2 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Trifolium cf globosum Konstantinos, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf hirtum 1 Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf hirtum 2 Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf hirtum 3 Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf hirtum 4 Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf hirtum 5 Hyden, Western Australia 111005 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf pilulare La Caldera, Hoya Verde, La Palma 090514 - Photo: Richard Åkesson (© 2014 Jan Thomas Johansson).

Trifolium cf vesiculosum 3 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf willdenowii 2 Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf willdenowii 3 Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf willdenowii 4 Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf willdenowii 5 Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

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

Trifolium dalmaticum 1 near Milea, old road to Grevena, N Greece 180628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dalmaticum 2 near Milea, old road to Grevena, N Greece 180628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dalmaticum 3 near Milea, old road to Grevena, N Greece 180628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dalmaticum 4 near Milea, old road to Grevena, N Greece 180628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dalmaticum 5 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dalmaticum 6 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium diffusum 3 NW of Xanthi, northern Greece 060610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium diffusum 4 NW of Xanthi, northern Greece 060610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 1 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 10 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 11 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 12 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 2 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 3 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 4 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 5 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 6 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 7 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 8 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium dubium 9 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 1 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 10 Lilla Hammarsnäs, Stora Hammar Sk 150722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 11 Lilla Hammarsnäs, Stora Hammar Sk 150722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 12 Lilla Hammarsnäs, Stora Hammar Sk 150722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 13 Lilla Hammarsnäs, Stora Hammar Sk 150722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 14 Lilla Hammarsnäs, Stora Hammar Sk 150722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 2 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 3 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 4 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 5 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 6 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 7 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 8 Kramnitse, Lolland DK 080824 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium fragiferum 9 Kramnitse, Lolland DK 080824 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium glanduliferum 4 NW of Alanya, Turkey 090407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium glanduliferum 5 NW of Alanya, Turkey 090407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium globosum Konstantinos, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium glomeratum 1 northeastern La Palma 090501 - Photo: Richard Åkesson (© 2014 Jan Thomas Johansson).

Trifolium glomeratum 2 northeastern La Palma 090501 - Photo: Richard Åkesson (© 2014 Jan Thomas Johansson).

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

Trifolium glomeratum 4 Petra, Lesvos, Greece 100516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 1 near Potochnitsa, Bulgaria 120510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 10 Ipsilou, Lesvos, Greece 130507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 2 near Potochnitsa, Bulgaria 120510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 4 near Potochnitsa, Bulgaria 120510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 5 near Potochnitsa, Bulgaria 120510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 6 Ipsilou, Lesvos, Greece 130507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 7 Ipsilou, Lesvos, Greece 130507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 8 Ipsilou, Lesvos, Greece 130507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 9 Ipsilou, Lesvos, Greece 130507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium haussknechtii 1 Alanya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium haussknechtii 2 Alanya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium heldreichianum 2 NW of Xanthi, northern Greece 060610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium heldreichianum 3 Mt Falakron, N Greece 180703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hirtum 1 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hirtum 2 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hirtum 3 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hirtum 4 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hirtum 5 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hirtum 6 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hirtum 7 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hirtum 8 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hirtum 9 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 1 Lund Sk 130614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 10 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 11 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 12 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 2 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 3 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 4 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 5 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 6 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 7 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 8 Alunbruket, Andrarum Sk 120610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium hybridum 9 E of Lund Sk 120724 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Trifolium latinum 1 Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium latinum 3 Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium leucanthum 1 W of Mandra, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium leucanthum 2 W of Mandra, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Trifolium lupinaster 10 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 12 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 14 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 15 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 17 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 18 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 19 E of Marcinkonys, Lithuania 210620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 21 E of Marcinkonys, Lithuania 210620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 27 Ajos, Kemi, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 3 E of Marcinkonys, Lithuania 150818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 5 E of Marcinkonys, Lithuania 150818 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 8 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 9 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp balcanicum N of Polygyros, Greece 050526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 10 Himmelev Grusgrav N of Roskilde DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 2 Lund Bot Garden 140617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 4 Vanajaniemi N of Hattula FI 120802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 5 Vanajaniemi N of Hattula FI 120802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 6 Vanajaniemi N of Hattula FI 120802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 7 Vanajaniemi N of Hattula FI 120802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 8 Vanajaniemi N of Hattula FI 120802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 9 Himmelev Grusgrav N of Roskilde DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium meneghinianum 2 between Ntipi and Larisos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium meneghinianum 3 between Ntipi and Larisos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium meneghinianum 4 between Ntipi and Larisos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium michelianum 6 Dadia, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium michelianum 7 Dadia, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium michelianum 8 Dadia, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 10 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 11 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 13 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 14 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 15 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 16 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 17 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 18 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 19 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 20 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 4 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 5 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 8 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 9 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 14 Kungsmarken, Södra Sandby Sk 190623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 15 Kungsmarken, Södra Sandby Sk 190623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 16 fruit Kungsmarken, Södra Sandby Sk juli 2020 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 3 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium nigrescens 1 Pefkochori, Greece 050528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium nigrescens 2 Pefkochori, Greece 050528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium nigrescens 7 Lardia Valley, Lesvos, Greece 130510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ochroleucon 2 above Polygyros, Greece 050528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ornithopodioides 1 Svaneke, Bornholm DK 090624 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ornithopodioides 2 Svaneke, Bornholm DK 090624 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ornithopodioides 3 Svaneke, Bornholm DK 090624 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pannonicum 1 Botiza, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium patulum 2 near Milea, old road to Grevena, N Greece 180628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pauciflorum 1 Konstantinos, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium petrisavii 1 NE of Gazi Pasa, Turkey 090408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium petrisavii 2 NE of Gazi Pasa, Turkey 090408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium petrisavii 3 NE of Gazi Pasa, Turkey 090408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium petrisavii 4 NE of Gazi Pasa, Turkey 090408 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium physodes 1 NW of Alanya, Turkey 090406 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium physodes 2 NW of Alanya, Turkey 090406 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium physodes 3 NW of Alanya, Turkey 090406 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium physodes 4 NW of Alanya, Turkey 090406 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium physodes 5 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium physodes 6 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium physodes 7 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium physodes 8 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium physodes 9 above Metsovon, Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pignantii 1 N of Polygyros, Greece 050526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium pilulare 10 ESE of Filia, Lesvos, Greece 100510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Trifolium pilulare 6 ESE of Filia, Lesvos, Greece 100510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pilulare 7 ESE of Filia, Lesvos, Greece 100510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pilulare 8 ESE of Filia, Lesvos, Greece 100510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pilulare 9 ESE of Filia, Lesvos, Greece 100510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp nivale 3 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp nivale 4 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp nivale 5 Cote 2000 between Moucherolle and Moucherotte FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp nivale 6 Cote 2000 between Moucherolle and Moucherotte FR 150704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp pratense 1 Skanör Sk 130809 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp pratense 2 Skanör Sk 130809 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp pratense 3 Skanör Sk 130809 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp pratense 4 Bergianska, Stockholm 060913 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp pratense 5 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp pratense 6 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp pratense 7 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp pratense 8 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium purpureum 3 Kampos, Lesvos, Greece 100512 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium purpureum 4 Kampos, Lesvos, Greece 100512 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium rechingeri 1 Lastos, Karpathos, Greece 040519 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium repens 1 Lund Sk 120726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium repens 2 Lund Sk 120726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium repens 3 Lund Sk 120726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium repens 4 Lund Sk 120726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium repens 5 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium repens 6 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium repens 7 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium repens 8 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 1 W of Mandamados, Lesvos, Greece 100514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 10 the Katara Pass, N Greece 180627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 11 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium resupinatum 13 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 14 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 2 W of Mandamados, Lesvos, Greece 100514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 3 W of Mandamados, Lesvos, Greece 100514 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 4 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 5 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 8 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 9 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium rubens 2 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium scabrum 1 Matala, Crete 110331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium scabrum 2 Matala, Crete 110331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium scabrum 3 Matala, Crete 110331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium scabrum 4 Matala, Crete 110331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium scabrum 5 Chipudes to Fortaleza, La Gomera 060423 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 1 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 10 Röjan, Jämtland 870718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 2 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 3 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 4 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 6 Kermesaari FI 120731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 7 Kermesaari FI 120731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 8 Kermesaari FI 120731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 1 NW of Alanya, Turkey 090409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 10 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 11 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 12 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 13 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 14 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 15 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 16 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 2 NW of Alanya, Turkey 090409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 3 Alanya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 4 Alanya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 5 Alanya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 6 Alanya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 7 Alanya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 8 Alanya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spumosum 9 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Trifolium stellatum 1 Phaistos, Crete 110331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium stellatum 2 Phaistos, Crete 110331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium stellatum 3 Phaistos, Crete 110331 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium stellatum 4 between Myrsini and Sfaki, Crete 110330 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium striatum 5 Simris Sk 090601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium striatum 6 Simris Sk 090601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium strictum 1 Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium strictum 2 Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium strictum 3 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium strictum 4 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium strictum 5 Yerusalimovo valley, Bulgaria 120511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium subterraneum 10 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium subterraneum 11 Rösa N of Klippan, Skåne 950827 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium subterraneum 12 Manawatu River Estuary Wetland NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium subterraneum 13 Manawatu River Estuary Wetland NZ 151112 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Trifolium subterraneum 5 NW of Alanya, near Konya, Turkey 090409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium subterraneum 6 NW of Alanya, near Konya, Turkey 090409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium subterraneum 7 NW of Alanya, near Konya, Turkey 090409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium subterraneum 8 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium subterraneum 9 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium suffocatum N of Mirador de la Baranda, La Palma 090513 - Photo: Richard Åkesson (© 2014 Jan Thomas Johansson).

Trifolium tenuifolium 1 Rousa, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium thalii 1 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium thalii 2 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium thalii 3 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium thalii 4 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium thalii 5 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium thalii 8 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium thalii 9 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 10 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 11 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 12 Pantallica area, Sicily 190417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 13 Pantallica area, Sicily 190417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 14 Pantallica area, Sicily 190417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 5 near Trujillo SP 140510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 6 near Trujillo SP 140510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 7 near Trujillo SP 140510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 8 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 9 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium trichocephalum 1 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium trichocephalum 2 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium trichocephalum 3 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium trichocephalum 4 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium trichocephalum 5 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium uniflorum 1 Ambelos Padroso, Samos, Greece 920508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium uniflorum 2 Ambelos Padroso, Samos, Greece 920508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium uniflorum 3 between Sanatorio and Xylocastro, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium willdenowii 1 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium willdenowii 2 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium willdenowii 3 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium willdenowii 4 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium willdenowii 5 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium willdenowii 7 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium willdenowii 8 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 1b Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 1c Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 2d E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 2e E of Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 3a Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 3b Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 3c Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 3d Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 3e Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium 3f Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium affine Mikri Limni, Lesvos, Greece 100511 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Trifolium alpestre 1 Vecstropi, Latvia 100712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 13 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 14 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 2 Vecstropi, Latvia 100712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 6 Djuplunde, Västerhejde, Gotland 940620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 7 Djuplunde, Västerhejde, Gotland 940620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpestre 9 E of Veseli, Czekia 950630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium alpinum 2 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium argutum 1 Konstantinos, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium argutum 2 Konstantinos, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 3 Höllviken Sk 130620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 4 Höllviken Sk 130620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 5 Skanör Sk 130609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 6 Skanör Sk 130609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 8 Skanör Sk 130609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium arvense 9 Skanör Sk 130609 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium aureum 2 Imatra Mills FI 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium aureum 3 Imatra Mills FI 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium aureum 5 Imatra Mills FI 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium aureum 6 Imatra Mills FI 120730 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium badium 4 Nassfeld, Austria 080701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium badium 5 Nassfeld, Austria 080701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium badium 6 Zdiar, Slovakia 950629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Trifolium bocconei 1 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium bocconei 2 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium campestre 3 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium campestre 4 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium campestre 5 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium canescens 1 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium canescens 5 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium canescens 6 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium canescens 7 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium canescens 8 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium canescens 9 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf squamosum Pefkochori, Greece 050524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf vesiculosum 1 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf vesiculosum 2 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium cf willdenowii 1 Santa Margarita River, CA 130415 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium diffusum 1 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium diffusum 2 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium echinatum 1 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium echinatum 2 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium echinatum 3 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium echinatum 4 Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium glanduliferum 1 NW of Alanya, Turkey 090407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium glanduliferum 2 NW of Alanya, Turkey 090407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium glanduliferum 3 NW of Alanya, Turkey 090407 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 11 W of Mandra, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium grandiflorum 3 near Potochnitsa, Bulgaria 120510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium haussknechtii 3 Alanya, Turkey 090405 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium heldreichianum 1 Petrota, Thracia, Greece 0606008 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium incarnatum ssp incarnatum 1 Sölvesborg, Blekinge 950527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium incarnatum ssp incarnatum 2 Gunnesbo, Lund Sk 080515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium incarnatum ssp incarnatum 3 Gunnesbo, Lund Sk 080515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium incarnatum ssp incarnatum 4 Gunnesbo, Lund Sk 080515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium incarnatum ssp incarnatum 5 Gunnesbo, Lund Sk 080515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium incarnatum ssp incarnatum 6 Gunnesbo, Lund Sk 080515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium incarnatum ssp mollineri N of Polygyros, Greece 050526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium infamia-ponertii Konstantinos, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium latinum 2 Dadia, Thracia, Greece 060603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Trifolium lucanicum Dadia, Thracia, Greece 060604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 1 E of Marcinkonys, Lithuania 150806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 2 E of Marcinkonys, Lithuania 150806 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 20 E of Marcinkonys, Lithuania 210620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 22 Ajos, Kemi, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 23 Ajos, Kemi, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 24 Ajos, Kemi, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 25 Ajos, Kemi, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 26 Ajos, Kemi, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 28 Ajos, Kemi, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 29 Ajos, Kemi, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 30 Ajos, Kemi, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 6 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium lupinaster 7 E of Marcinkonys, Lithuania 150822 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 1 Lund Bot Garden 140617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 11 Himmelev Grusgrav N of Roskilde DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 12 Himmelev Grusgrav N of Roskilde DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium medium ssp medium 3 Lund Bot Garden 140617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium meneghinianum 1 between Ntipi and Larisos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

Trifolium micranthum 1 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 12 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 2 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 3 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 6 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium micranthum 7 Stendrup Strand near Midtskov, Kolding DK 130628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 1 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 10 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 11 Kungsmarken, Södra Sandby Sk 190617 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 12 Kungsmarken, Södra Sandby Sk 190608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 13 Kungsmarken, Södra Sandby Sk 190608 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 2 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 4 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 5 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 6 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 7 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 8 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium montanum 9 Nolgården, Näs, Västergötland 140530 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium nigrescens 3 Lardia Valley, Lesvos, Greece 130510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium nigrescens 4 Lardia Valley, Lesvos, Greece 130510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium nigrescens 5 Lardia Valley, Lesvos, Greece 130510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium nigrescens 6 Lardia Valley, Lesvos, Greece 130510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ochroleucon 1 E of Veseli, Czekia 950630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ochroleucon 3 NW of Dadia, Thracia, Greece 060606 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ornithopodioides 4 Svaneke, Bornholm DK 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ornithopodioides 5 Svaneke, Bornholm DK 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ornithopodioides 6 Svaneke, Bornholm DK 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ornithopodioides 7 Svaneke, Bornholm DK 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium ornithopodioides 8 Svaneke, Bornholm DK 120603 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pallidum 1 NW of Xanthi, northern Greece 060610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pallidum 2 NW of Xanthi, northern Greece 060610 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pannonicum 2 Botiza, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pannonicum 3 Botiza, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pannonicum 4 Botiza, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pannonicum 5 Botiza, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pannonicum 6 Botiza, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pannonicum 7 Botiza, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pannonicum 8 Botiza, Romania 090613 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium patulum 1 near Milea, old road to Grevena, N Greece 180628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pauciflorum 2 Kontakeika, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pignantii 2 N of Polygyros, Greece 050526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp nivale 1 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp nivale 2 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium pratense ssp pratense 9 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium purpureum 1 the Evros estuary, Greece 060607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium purpureum 2 the Evros estuary, Greece 060607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium purpureum ssp pamphylicum Konstantinos, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium rechingeri 2 Lastos, Karpathos, Greece 040519 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 10 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 12 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium resupinatum 6 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium resupinatum 7 Molivos, Lesvos, Greece 130506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium rubens 1 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium rubens 3 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium rubens 4 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium rubens 5 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Trifolium rubens E of Veseli, Czekia 950630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium scutatum 1 Konstantinos, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium scutatum 2 Konstantinos, Samos, Greece 920507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium smyrnaeum near Lake Mikri Prespa, N Greece 180629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 5 near Dvärsätt, Jämtland 090702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium spadiceum 9 Röjan, Jämtland 870718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium stellatum 5 SE of Mijas, Andalusia SP 120327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium stellatum 6 SE of Mijas, Andalusia SP 120327 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium striatum 1 Hammershus, Bornholm DK 120602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium striatum 2 Hammershus, Bornholm DK 120602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium striatum 3 Hammershus, Bornholm DK 120602 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium striatum 4 Stenshuvud, Södra Mellby Sk 090527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium subterraneum 4 Parque Natural Sierra de Gredos, west of Arenas de San Pedro SP 140506 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tenuifolium 2 Rousa, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tenuifolium 3 Rousa, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium thalii 6 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium thalii 7 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 1 near Trujillo SP 140510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 2 near Trujillo SP 140510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 3 near Trujillo SP 140510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium tomentosum 4 near Trujillo SP 140510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium uniflorum 4 between Sanatorio and Xylocastro, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium uniflorum 5 between Sanatorio and Xylocastro, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trifolium willdenowii 6 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).