The anthocyanins of Epacris impressa Labill

Cyanidin-3-xyloside and cyanidin-3-glucoside have been identified as the major anthocyanin pigments in Epacris impressa Labill. It has been shown that the colour gradation evident. in flowers in natural populations of E. impressa is due to parallel quantitative differences in both pigments.
Investigation of other parts of the plant has shown that the same two pigments are present though in varying proportion.