Cyrtosperma merkusii

Cyrtosperma merkusii or giant swamp taro, is a crop grown throughout Oceania and into South and Southeast Asia. It is a riverine and "swamp crop" similar to taro, but "with bigger leaves and larger, coarser roots." There are no demonstrably wild populations today, but it is believed to be native to Indonesia. It is known as puraka in Cook Islands, lak in Yap (Federated States of Micronesia), babai in Kiribati, iaraj in the Marshall Islands, brak in Palau, babaʻ in the Marianas Islands, pula’a in Samoa, via kana, Pulaka in Lau, Lovo in Fiji, pulaka in Tokelau and Tuvalu, mwahng in Pohnpei, pasruk in Kosrae, simiden in Chuuk, swam taro in Papua New Guinea, navia in Vanuatu and palawan in the Philippines. The same species is also known by the names Cyrtosperma lasioides, Cyrtosperma chamissonis and Cyrtosperma edule. In the harsh atoll environments of the Central Pacific, especially Tuvalu and Kiribati, swamp taro is an important source of carbohydrates in a diet dominated by fish and coc......read more on Wikipedia.