Veronica spicata flowers from the “Mainzer Sand”, Mainz, Germany. Sept. 2012. Photo by Aaron Liston.

Veronica spicata flowers from the "Mainzer Sand", Mainz, Germany. Sept. 2012. Photo by Aaron Liston.

Veronica spicata flowers from the “Mainzer Sand”, Mainz, Germany. Sept. 2012. Photo by Aaron Liston. Read more