|genus = Geniostoma
|species = quadrangulare
|authority = Fosberg & Sachet
}}Geniostoma quadrangulare is a species of plant in the Loganiaceae family. It is endemic to French Polynesia.
References
{{Taxonbar|from=Q5425617}}{{Gentianales-stub}} 4 : Flora of French Polynesia|Geniostoma|Least concern plants|Taxonomy articles created by Polbot