Elatostema rugosum

Elatostema rugosum, commonly known as parataniwha or New Zealand begonia, is a herbaceous ground cover plant that is endemic to New Zealand.

Elatostema rugosum grows up to 1 m high in wet, shaded places such as gullies and streamsides. It has long green-purple leaves with prominent veins and a saw-like edge.

The common name parataniwha, roughly translates to "home of the taniwha" and suggests the presence of a taniwha, a powerful supernatural being in Māori mythology.