Oddly enough the calla lily is not a lily at all and it's not really a calla either. Calla lily is actually a common name for the zantedeschia genus which once was a part of the calla genus. It was separated into several smaller genuses when it became apparent they were not as closely related as biologists thought. But the common name has stuck and this beautiful flower is a beloved favorite. Canon Rebel XTi, 1/320 sec @ f/7.1, ISO 800, 50mm macro lens, illuminated by a micro Litepanel shining through the white flower.