Cyrtosperma merkusii

About

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, 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, 'kakake' in Solomon Islands, navia in Vanuatu and galyang or palawan in the Philippines.

Summary from Wikipedia