Konjac (English pronunciation: /ˈkoʊnjæk/ KOHN-yak; Amorphophallus konjac; syn. A. rivieri; Japanese: 蒟蒻/菎蒻; こんにゃく; konnyaku; Korean: 곤약; gonyak; Chinese: 蒟蒻; pinyin: jǔruò), also known as konjak, konjaku, konnyaku potato, devil's tongue, voodoo lily, snake palm, or elephant yam (though this name is also used for A. paeoniifolius), is a plant of the genus Amorphophallus. It is native to warm subtropical to tropical eastern Asia, from Japan and China south to Indonesia (USDA hardiness Zone 6-11). It is a perennial plant, growing from a large corm up to 25 cm in diameter. The single leaf is up to 1.3 m across, bipinnate, and divided into numerous leaflets. The flowers are produced on a spathe enclosed by a dark purple spadix up to 55 cm long.