Paratrophis smithii

{{Short description|Species of tree}}

{{Use New Zealand English|date=July 2024}}

{{Speciesbox

| image = Gardenology.org-IMG 2713 rbgs11jan.jpg

| genus = Paratrophis

| species = smithii

| authority = Cheeseman (1887 publ. 1888)

| synonyms = Streblus smithii {{small|(Cheeseman) Corner (1962)}}

| synonyms_ref = [https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:854879-1 Paratrophis smithii Cheeseman]. Plants of the World Online. Retrieved 23 April 2024.

}}

Paratrophis smithii (also known as Smith's milkwood and the Three Kings milk tree) is a species of plant in the family Moraceae. It is endemic to Three Kings Islands, New Zealand. The bark exudes a thick white (often referred to as a milk-like) sap when cut. The flowers are small and unisexual and the fruit is either achene or drupe.{{cite web |url=http://web.auckland.ac.nz/uoa/science/about/departments/sbs/newzealandplants/seed-plants-flowering/find-by-northern-off-shore-islands/moraceae-mulberry-family.cfm |title=Three Kings milk tree |access-date=8 December 2010 |publisher=School of Biological Sciences, University of Auckland }}