Grass of Parnassus which has a single white flower on each stem is not a grass nor does it have grass -like leaves.  The Greek physician Dioscorides described it as growing on the slopes of the sacred Mount Parnassus in Greece in the 1st century. Here it grows mainly in fairly damp areas in northern England and Scotland during late summer and its Swedish name of Slåtterblomma means hay-making flower indicating that it is a time to bring in the harvest. Its medicinal uses included being distilled as an eye lotion, a mouthwash, for treating wounds and indigestion and for dissolving kidney stones.