Diostea

{{Short description|Genus of plants}}

{{Speciesbox

| image = Diostea juncea 186792153.jpg

| image_caption =

| genus = Diostea

| parent_authority = Miers

| species = juncea

| authority = (Gillies & Hook.) Miers

}}

Diostea is a monotypic genus of flowering plants belonging to the family Verbenaceae. The only species is Diostea juncea.{{cite web |title=Diostea Miers {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:41255-1 |website=Plants of the World Online |access-date=26 May 2021 |language=en}}

Its native range is Southern South America.