Begonia hydrocotylifolia Hook.

Succulent, rhizome. Leaves orbicular to 7 cm wide, surface green, with dark green bands over veins, white near centre; reverse light green, with wavy hairs, flushed red on veins; margins entire, soft, brown wavy hairs. Flowers pink, profuse, very fragrant.

Mexico

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.