Smaller than Common Milkwort, this perennial wildflower differs from its cousin by having its leaves almost always in opposite pairs, whereas the former's leaves are arranged alternately. Its little flowers (5-6mm) are usually blue and in short spikes of 3 – 10, flowering from May to September. Heath Milkwort grows on acid, peaty soils, and blanket bogs, is a native and belongs to the family Polygalaceae.
I identified this plant growing in the Burren, Co Clare in 2005 and photographed it at that time.
If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre