It has a similar growth habit to Callisia fragrans ..
http://www.quoka.de/pflanzen-g...
That could make it in the family Commelinaceae. Dichorisandra pubescens var. taeniensishas has got striped leaves, Dichorisandra pubescens is in the Atlantic Rainforest ..
http://www.meemelink.com/print...
I've gone through the list for the Atlantic Rainforest, nothing else there which comes close.
http://reflora.jbrj.gov.br/jab...
I don't know what other family it could be in other than maybe the ginger family ..
http://www.ceapdesign.com.br/f...