Sideroxylon polynesicumSideroxylon polynesicum, the keahi or island nesoluma, is a species of flowering plant in the family Sapotaceae. It is found in the Cook, Tubuai, and Hawaiian Islands. It is threatened by habitat loss.TaxonomyThis species was first described as Chrysophyllum polynesicum by William Hillebrand in 1888, two years after his demise. Then Henri [Ernest Baillon] transferred it to the genus Nesoluma, all of whose constituent species were later incorporated into the genus Sideroxylon as a result of phylogenetic analyses.