Alocasia are a group of plants in the araceae family. Many of these large species and hybrids have giant hastate like leaves that point upward and grow 4 to 5 feet long. The larger species will form tuberous like trunks with age. The smaller often more colorful species and hybrids. These have some of the most unique foliage of any plants in the world. Ranging from velvet with white veins to shinny metallic like leaves.