Note: The species was regarded by de Laubenfels as including material from Sri Lanka now referred to Cycas zeylanica (J. Schust.) A. Lindstr. & K.D. Hill. In addition to specimen records examined, none of which is from a protected area, the species has been seen on Nosy Mangabe (Schatz, pers. obs.). Additional information is available on the Malagasy species at http://plantnet.rbgsyd.gov.au/cgi-bin/cycadpg?taxname=Cycas+thouarsii.