Prickly poppies are distinguished from other species in the genus Argemone by the lack of spines on the upper sides of leaves Prickly poppies, Argemone polyanthemos, were abundant and in full bloom ...

Prickly poppies, Argemone polyanthemos, were abundant and in full bloom along the Degge Trail in the greenbelt in north Boulder. I enjoyed examining the blooms to see the pollinating solitary bees, ...