I have searched google to try to find a picture of a betulia but had no luck All I could surmise is that it is a variety of begonia....perhaps similar to a rex begonia. Is it an indoor plant? I know that rex begonias can be tricky as too much or too little water can kill them quickly. Also it is suseptible to spider mite infestation.
(do skréše) Nebavi tě prokósávat se na oblébeny léstke přes dvě, tře bóchnuti do meše? Cálojici členi mužó šópnót jaké léstek chcó do kontextovy nabidke. (pauloaguia) (okázat šecke vechetávke)