Breynia phuongiana (Phyllanthaceae), a new species from the Central Highlands of Vietnam

A new species, Breynia phuongiana (Phyllanthaceae subgen. Sauropus ), is described and illustrated from the Central Highlands of Vietnam. It is morphologically similar to B. beillei , B. bonii , and B. thorelii , but differs in having oblong‐elliptic leaves, sepals marked with reddish striations, an androphore exceeding 1 mm in length, and distinctly hexagonal, starfish‐shaped fruits with erect and persistent stigmas. A detailed morphological comparison with related species is provided. A preliminary conservation assessment categorizes it as ‘Data Deficient' (DD) based on IUCN Red List criteria.