Begonia reniformis Dryand.

Roots fibrous. Stems to over 1 m tall, thick, with thin, grey-brown bark-like coating. Leaves to 15 cm long, lime-green glossy surface, sparsely hairy above and below; margins toothed. Flowers small, white, in large spreading clusters. [b. vitifolia Schott]

Colombia, Brazil

Source: Wright, P.; Goodwin, J.; Spencer, R. (1997). Begoniaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Rosanae
order      Cucurbitales
family       Begoniaceae
genus        Begonia L.