Ctenitis koordersii Ctenitis koordersii Holttum in Blumea 31: 25. 1985Unknown type category: Celebes, Minahassa, Koorders 17027=Aspidium obtusilobum in Ann. Jard. Bot. Buitenzorg 15: 130. 1898=Dryopteris zeylanica Alderw., Malayan Ferns: 203. 1908