Begonia kenworthyae Ziesenh.

Rhizomes erect to 15 cm high, fleshy and with terminal leaves. Leaves star-shaped to 12 cm long, surface blue green, with white powdery coating; margin toothed and hairy. Flowers white to pale pink, numerous, late winter.

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.