Hello Evan,
They call "Taro" Papa China here, & there are several varieties sold. It is quite common though I have not tried eating them yet. I am going to do that after I have enough land to grow massive amounts of the things! HEHE! In this area, Colocasias, & Alocasias are invasive, or at least do quite well. The people here cut them down instead of removing the corms so I do not think everyone understands the plants. I am looking forward to collecting 5 or 6 corms to store, & at least one plant to have for my collection. I know where I collected the others, so collecting more to seed my land when I am ready is not a problem.
All of the colocasia,xanthasoma, & Alocasia are naturalized as they came from Asia if I understand what I have been reading correctly. I would ask LariAnn to be sure since she is the expert on this stuff.
Noel