Endiandra monothyra subsp. monothyra, known as rose walnut, is a subspecies of plant in the family Lauraceae native to Queensland, Australia. It is a rainforest tree, first described in 1989. It has a conservation status of Least concern.
Description Endiandra monothyra subsp. monothyra is a tree that can grow up to in height and diameter, with a trunk that is often buttressed. Petioles average about long. The leaves are generally about long and wide and have 4–9 pairs of lateral veins. They may be lanceolate, elliptic or ovate. They are green on both sides, but the lower surface has a fine covering of pale brown hairs when young. The midrib is depressed on the upper surface of the blade, and domatia are absent.
The inflorescence is a panicle arising from the . Flowers are pale brown to green and without scent; they have six tepals up to long. The fruits are an ellipsoid drupe, maroon initially and becoming shiny black, about long and wide. They contain a single brown seed up to long and wide.
Distribution The tree is widespread in northeast Queensland. It grows in well-developed rainforest on a variety of soil types, but it has a preference for basalt. It occurs at altitudes from .
Conservation It is rated as least concern by the Queensland Government under its Nature Conservation Act.
References
External links
Map of herbarium collections of this species at the Australasian Virtual Herbarium Observations of this species on iNaturalist