Begonia maculata Raddi

Roots fibrous. Stems erect to 1m tall, branched, light green. Leaves to 21 cm long, dark green, leathery, with bold silver spotting above, red below; margins entire, thickened and wavy. Flowers 2.5 cm wide, white, in many small clusters.

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.