What is "cyrtosperma"

Cyrtosperma is a genus of flowering plants in the Araceae family. The genus went through considerable taxonomic changes in the 1980s, and as a result is now considered to be native only to Southeast Asia and some Pacific islands. Previously, the genus was believed to be widespread from Asia to Africa and South America, but the African and South American species were subsequently moved into separate genera. Cyrtosperma is now known to be most prominent in New Guinea. The genus Cyrtosperma is unique in this regards because it is the only known big genus in Araceae that is known to be found east of Wallace's line.

Cyrtosperma merkusii, or pulaka, is grown as a root crop in Oceania.

1. Cyrtosperma beccarianum A.Hay - New Guinea
2. Cyrtosperma bougainvillense A.Hay - Solomon Islands
3. Cyrtosperma brassii A.Hay - Louisiade Archipelago
4. Cyrtosperma carrii A.Hay - Papua New Guinea
5. Cyrtosperma cuspidispathum Alderw. - New Guinea
6. Cyrtosperma giganteum Engl. - New Guinea
7. Cyrtosperma gressittiorum A.Hay - Louisiade Archipelago
8. Cyrtosperma hambalii A.Dearden & A.Hay - Western New Guinea
9. Cyrtosperma johnstonii (N.E.Br.) N.E.Br. - Solomon Islands
10. Cyrtosperma kokodense A.Hay - Papua New Guinea
11. Cyrtosperma macrotum Becc. ex Engl. - New Guinea
12. Cyrtosperma merkusii (Hassk.) Schott - New Guinea, Solomon Islands, Borneo, Java, Sumatra, Philippines, Fiji, Samoa, Kiribati, Santa Cruz Islands, Cook Islands, Marquesas, Caroline Islands, Mariana Islands; naturalized on various other islands