Many years ago, I visited a Polynesian market in New Zealand and bought some tubers that were called Tarua in the South Pacific Islands…similar but different (and larger) to the more common Taro (Colocasia esculenta). For a plant that supposedly originated from tropical lowland Malaysia, Taro is a surprisingly cold hardy plant making a nice edimental house plant that can be outside in the summer even in my cool climate! I took a Tarua tuber home and grew it as a house plant for some years. It is probably Xanthosoma sagittifolium, also known as Elephant Ears, and closely related to Taro and similarly quite hardy! See the pictures below.
For other posts about Taro, see the links below:
Taro: An Excellent Edimental House Plant http://www.edimentals.com/blog/?p=5738
The Lotus effect on Taro leaves: http://www.edimentals.com/blog/?p=5732
25 Edible Tubers of 16 species: http://www.edimentals.com/blog/?page_id=3365
A Nepalese Feast in Malvik (including the preparation of taro leaves Nepalese style!) http://www.edimentals.com/blog/?p=6593