Some plants just ever seem to get formally identified and assigned species names. In the Begonia community, such plants instead get assigned "U" numbers. This Vietnamese species is called "U489" , and its a Stunner. It develops large parasol-like leaves of nearly solid silver - only a little dark emerald green near the center for contrast. Since it gets fairly good size, it's probably not ideal for terrariums ....although it seems to appreciate such warm and humid conditions.
These are husky plants, currently in 3" pots.
|Int - Warm||Low - Medium|
Int - WarmVery showy but can get fairly large