Closeup of flower. Kew Garden, London, UK. Planted. 1995-08-01.

Argemone pleiacantha Greene
Engl.: southwestern pricklypoppy, white prickly poppy, cowboy's fried egg, crested-poppy, thistle poppy.
Sven.: taggvallmo.
Span.: amapola, chicalote.
Bot. syn.: Argemone platyceras Link & Otto