Cryptocarya onoprienkoana, commonly known as rose maple, southern maple, rose walnut or pigeonberry ash is a species of flowering plant in the family Lauraceae and is endemic to Queensland. It is a tree with lance-shaped to elliptic leaves, creamy-green, perfumed flowers, and elliptical black to bluish-black drupes.
Cryptocarya onoprienkoana is a tree that typically grows to a height of up to, its stems buttressed. Its leaves are lance-shaped to elliptic, long and wide, on a petiole long. The flowers creamy green and perfumed, arranged in panicles in leaf axils and are no longer than the leaves. The perianth tube is long and wide. The outer anthers are long and wide, the inner anthers long and wide. Flowering occurs from September to December, and the fruit is an elliptical, black to bluish-black drupe, long and wide with cream-coloured cotyledons.
Cryptocarya onoprienkoana was first formally described in 1989 by Bernard Hyland in Australian Systematic Botany from specimens collected in 1983.
Rose maple grows in rainforest, sometimes in drier rainforest, at altitudes of between the Windsor Tablelands in the north and Gympie in central Queensland.
This species of Cryptocarya is listed as "of least concern" under the Queensland Government Nature Conservation Act 1992.[1]