Six species names in "Arthrophyllum" could not be transferred to "Polyscias" with the same specific epithet because those epithets were already occupied in "Polyscias" by the following species: "Polyscias balansae" (subgenus Tieghemopanax), "Polyscias borneensis" (subgenus Tetraplasandra), "Polyscias crassa" (subgenus Indokingia), "Polyscias ferruginea" (="Polyscias fulva") (subgenus Sciadopanax), "Polyscias grandifolia" (="Polyscias macgillivrayi") (subgenus Polyscias), and "Polyscias javanica" (subgenus Polyscias). Because of the existence of these names in "Polyscias", "Arthrophyllum borneense" was transferred to "Polyscias" as "Polyscias aherniana". Philipson had used the name "Arthrophyllum ahernianum" for this species. "Arthrophyllum crassum" was renamed as "Polyscias revoluta". "Arthrophyllum ferrugineum" became "Polyscias thailandica" and "Arthrophyllum javanicum" became "Polyscias elliptica".