Synonyms: Brachyramphus lactucoides; Brachyrhamphus lactucoides (heterotypic); Heterachaena massauensis (homotypic); Heterachaena massavensis (homotypic); Lactuca massauensis (homotypic); Lactuca massavensis (homotypic); Lactuca massaviensis (homotypic); Launaea kuriensis (heterotypic); Launaea lactucoides; Launaea massauensis (homotypic); Launaya massavensis; Sonchus dichotomus; Sonchus massauensis (homotypic); Sonchus massavensis (homotypic); Sonchus massaviensis; Zollikoferia massaueensis (homotypic); Zollikoferia massavensis