Clustered Bellflower (Campanula glomerata) is a relative of the Harebell, also of the Campanulaceae family. Found in grassland on calcareous soils in July/August.

 This one was photographed in Bedfordshire at Knocking Hoe where they proliferate. Roy Vickery notes in his excellent Plant-Lore website that C. glomerata was sometimes known as Danes' Blood in Cambridgeshire which is not so far away.

 Indeed it is one of several plants that went by that name, another being the much rarer Pasque Flower which also grows at Knocking Hoe. Whether in myth or reality it seems that the landscape of both these plants was associated with battles of the distant past.