I adore Irises, and this one has to be one of my very favourites.
The vibrant yellow colour of the Yellow Flag makes this plant stand out above many others near the waterside. The leaves are sword-shaped.
It flowers June to August, and is found near marshes, on the banks of rivers and streams, the margins of reedbeds and ditches, and around the edges of ponds. A common and widespread species.
May 2010, local canal, Staffordshire. © Pete Hillman 2010.