Euphrasia officinalis), is also known as eyebright or eyewort. The white flowers are often tinged violet with red. or bronzy green foliage. It is a parasitic species similar to Yellow Rattle, and is used in wild flower meadows to control the spread of unwanted grass species. Eyebright prefers alkaline soils but can tolerate mildly acidic soil types. These flowers are tiny and difficult to find unless you know what you are looking for.