Sicyos niihauensis H. St. John , Pacific Sci. 13: 175. 1959. Type information: Holotype [BISH]. H. St. John 23567. 29 March 1949. Ni`ihau: 1 mi W of Ki`i.50ft. Isotype(s) [BISH! [2], PTBG! [4]]. =Sicyos maximowiczii