Closeup of flower with bumblebee. Sierra Vista, AZ, US. Wild. 1998-05-01.

Flowers. Gothenburg bot.g., Sweden. Planted. 2007-07-12.

Flowers. Gothenburg bot.g., Sweden. Planted. 2007-07-12.

Flowering plants. Gothenburg bot.g., Sweden. Planted. 2007-07-12.

Closeup of flowers. Noxious weed, edible if you get rid of the spines. You think I like spiny plants? I think this one is elegant. Liljendal, Finland. Wild. 1995-07-01.

Closeup of flower. Helsinki, Finland. Wild. 1995-07-01.

Flowering plant. Helsinki, Finland. Wild. 1995-07-01.

Flowering plant. Liljendal, Finland. Wild. 1995-07-01.

Flowering plant. Purgatory, CO, US. Wild. 1996-07-26.

Closeup of flower. Purgatory, CO, US. Wild. 1996-07-26.

Leaf rosette covered with frost. Turku, Finland. Wild. 2000-09-15.

Spiny purple leaves in spring. Perheniemi, Iitti, Finland. Wild. 2007-05-11.

Leaf rosette, dark purple spring colour, and very very very spiny. Perheniemi, Iitti, Finland. Wild. 2007-05-11.

A perfect flowercushion. Sierra Vista, AZ, US. Wild. 1998-05-01.

Flowering plant. Sierra Vista, AZ, US. Wild. 1998-05-01.

Flowerbuds. Lund bot.g., Sweden. Planted. 2005-06-06.

Plant with flowerbud. Oooh, spiny! Lund bot.g., Sweden. Planted. 2005-06-06.

Classic texts: WaldFeld 1947: Die Bilder.