Begonia scutifolia is an attractive small-growing African species. It is free flowering, similar in that way to prismatocarpa and B. vankerckhovenii. It bears attractive yellow flowers. It's a lover of humidity and thus it will perform best as a terrarium subject.
These are nice Blooming size plants currently in 2" pots. Reasonably easy.
View Terrarium / Begonia Culture Sheet
|Int - Warm||Low - Medium|
Int - WarmFree flowering, humid loving, small African terrarium species