Begonia goegoensis N.E.Br.

Leaves ovate, acuminate, to 17 cm long; wrinkled, satiny, dark green surface with light green veins; red below; stalk square in section, concave, pale green, flushed red at base; margins hairy, round-toothed. Flowers small, pink, in open clusters.

Sumatra

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.

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