Lamium album 11 Ullstorp Sk 150515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 12 Ullstorp Sk 150515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 13 Ullstorp Sk 150515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 14 Ullstorp Sk 150515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 15 Ullstorp Sk 150515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium amplexicaule 3 Höllviken Sk 120718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium amplexicaule 4 Höllviken Sk 120718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium amplexicaule 5 Höllviken Sk 120718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium amplexicaule 6 Höllviken Sk 120718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium amplexicaule 7 Höllviken Sk 120718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 4 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 6 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Lamium galeobdolon ssp galeobdolon 1 Fågelsång, Södra Sandby Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium galeobdolon ssp galeobdolon 2 Fågelsång, Södra Sandby Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium galeobdolon ssp galeobdolon 3 Fågelsång, Södra Sandby Sk 130607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium galeobdolon ssp montanum 2 Böckstein, Austria 080701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium galeobdolon ssp montanum 3 Böckstein, Austria 080701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium garganicum 1 S of Agiasos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium garganicum 2 S of Agiasos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium garganicum 3 S of Agiasos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium garganicum 5 S of Agiasos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Lamium garganicum 8 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium garganicum 9 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium hybridum 3 Vesijako FI 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium hybridum 4 Vesijako FI 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium hybridum 8 Kverrestad Sk 150531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium maculatum 4 Bad Gastein, Austria 080630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium maculatum 5 Bad Gastein, Austria 080630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Lamium orvala 4 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Lamium orvala 9 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 1 Lund Sk 080505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 10 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 11 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 12 Lund Sk 080505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 2 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 3 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 4 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 5 Lund Sk 080505 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 6 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 7 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 8 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium purpureum 9 Skanör Sk 140412 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium 1a Ipsilou, Lesvos, Greece 130507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium 1b Ipsilou, Lesvos, Greece 130507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 1 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 10 Lund Sk 150520 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 2 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 3 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 4 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 5 Höllviken Sk 120717 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 6 Karlberg, Stockholm 150526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 7 Karlberg, Stockholm 150526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 8 Karlberg, Stockholm 150526 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium album 9 Lund Sk 150520 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium amplexicaule 1 Höllviken Sk 120718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium amplexicaule 2 Höllviken Sk 120718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 1 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 10 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 11 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 2 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 3 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 5 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 7 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 8 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium bifidum 9 Sicily 190420 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

Lamium confertum 7 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium confertum 8 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium galeobdolon ssp montanum 1 Böckstein, Austria 080701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium garganicum 4 S of Agiasos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium garganicum 6 S of Agiasos, Lesvos, Greece 100513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium hybridum 1 Vesijako FI 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium hybridum 2 Vesijako FI 120801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium hybridum 5 Kverrestad Sk 150531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium hybridum 6 Kverrestad Sk 150531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium hybridum 7 Kverrestad Sk 150531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium hybridum 9 Kverrestad Sk 150531 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium maculatum 1 Ontika, Estonia 100709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium maculatum 2 Ontika, Estonia 100709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium maculatum 3 Ontika, Estonia 100709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium maculatum 6 Bad Gastein, Austria 080630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium orvala 10 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium orvala 11 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium orvala 3 Copenhagen Bot Garden 080513 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium orvala 6 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium orvala 7 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Lamium orvala 8 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).