Begonia involucrata Liebm.

Roots fibrous. Stems to 40 cm tall, sometimes branched, covered with soft white hairs, internodes short. Leaves broadly ovate with double apex, mid-green upper surface, paler below, with short white hairs above and below; margins toothed, hairy. Flowers white, fragrant, in dense clusters.

Costa Rica

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.