Binomial name: Alocasia macrorrhiza
Alocasia macrorrhiza is a native of the outer regions of tropical rainforests, in the valleys of wild banana forests and in the bank of agricultural ditches. It can be found in tropical and subtropical regions to the south of Yangtze that are at an altitude of below 1700 meters as well as in Southeast Asia. It has stoloniferous rhizomes and aerial stems, the latter standing straight up pointing skywards, with a height of 0.1-5.0 meters. The leaf blade is 50-90 cm long and 40–90 cm broad, spirally arranged. The female inflorescence is white. Sterile male inflorescence is green-white, while the sterile one is light yellow. The rootstock is poisonous but can help with heat-clearing and detoxifying.