Mercurialis annua 8 Río de la Miel, Los Alcornocales Natural Park, Andalucía Spain 220413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 9 Río de la Miel, Los Alcornocales Natural Park, Andalucía Spain 220413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 10 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 12 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 2 Fågelsång, Södra Sandby Sk 080401 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 3 Fågelsång, Södra Sandby Sk 080401 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 6 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 7 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 8 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 9 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 1 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 1 Brunnsviken, Stockholm 881009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 10 Río de la Miel, Los Alcornocales Natural Park, Andalucía Spain 220413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 11 Río de la Miel, Los Alcornocales Natural Park, Andalucía Spain 220413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 12 Río de la Miel, Los Alcornocales Natural Park, Andalucía Spain 220413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 2 Brunnsviken, Stockholm 881009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 3 Brunnsviken, Stockholm 881009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 4 Kyllaj, Gotland 940623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 5 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 6 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis annua 7 Copenhagen Bot Garden 121017 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 1 Fågelsång, Södra Sandby Sk 080401 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 11 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 4 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis perennis 5 Pålsjö skog, Helsingborg 130601 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 10 Sierra de Mijas, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 11 Sierra de Mijas, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 2 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 3 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 4 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 5 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 6 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 7 Hoces del Rio Duratón near Sepúlveda SP 140504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 8 Sierra de Mijas, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Mercurialis tomentosa 9 Sierra de Mijas, Andalucía Spain 220414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).