Arizona ("Summer") Poppy

Kallstroemia grandiflora

Family: Zygophyllaceae

This flower is similar in appearance to the Mexican Poppy, but there are numerous differences. This poppy blooms in late summer (August to September) rather than early spring, it has 5 flower petals instead of 4, it has bipinnate leaves, and grows from a flat-sprawling basal stalk (see attached images). Its flower also has characteristic, radiating red veins, as seen below:

The specimen below sprawled in the fine silts of Lower Hot Springs Canyon in September of 2003:

Below, a "Summer Poppy" blooming in the West Wash of Lower Hot Springs Canyon, August 2004: