Kakitsubata, 杜若, Japanese water iris, Iris laevigata. Tsukuba, Ibaraki, Japan, May 2007 Nikon D70s/Nikkor18-200 --------------------- In Japan, Iris blossom is inevitable seasonal flower as cherry in our calendar, then here and there, iris ponds are set in parks or big gardens. Loved species are these two species, and both are aquatic plant. Traditionally Iris is supposed to be in the water.