Begonia homonyma Steud.

Stems erect, to 1 m high, fleshy, swollen at the nodes, branching. Leaves up to 13 cm long, pale green, often with reddish veins; margins range from entire to shallowly lobed. Flowers white or pink.

S Africa

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.