#tuberous_begonia  any of numerous begonias having large tuberous roots
  supertype:  begonia  any of numerous plants of the genus Begonia grown for their attractive glossy asymmetrical leaves and colorful flowers in usually terminal cymes or racemes
  subtype:  hybrid_tuberous_begonia__Begonia_tuberhybrida  any of numerous hybrid begonias having tuberous roots and variously colored flowers

No statement uses or specializes tuberous_begonia; click here to add one.