Dianella prunina is a species of flowering plant in the family Asphodelaceae. It is a perennial plant with blue to purple flowers. The fruits are berries. The species is native to New South Wales, Australia, and was described in 1987.
Taxonomy Dianella prunina was described by Rodney John Francis Henderson in 1987. It is closely related to Dianella revoluta.
Distribution Dianella prunina is native to the subtropical biome of south-east New South Wales. It grows in the Sydney Basin, from Wollemi National Park to Bundanoon.
The species grows on sandy soils in Eucalyptus forest, at elevations of .
Description Dianella prunina is a perennial herb that grows up to high. The stems are around long. The roots are fibrous and fleshy. The leaves are long, wide, and flat to curved.
The inflorescences are more or less conical in outline, and have two to eight flowers. The flower stems are around long. The perianth is mid-blue to dark violet in colour. The sepals are narrowly ovate to elliptic, long, and have five veins. The petals are narrowly elliptical, long, and normally have five nerves. The plant flowers in spring.
The fruit is a long berry. The seeds are long, and can be dull or shiny. The seed case is grooved.
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