Begonia diadema Linden

Stems rhizomatous, erect, to 50 cm tall; rhizome jointed at or below the surface, upright, zigzag. Leaves deeply lobed, 5 or more main lobes; bright green, silver spotted surface; margins toothed and with minor lobing. Flowers pink.

Borneo

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.