Synonyms for Rex Begonia (same or very similar meaning)
WordNet sense 1 (any of numerous usually rhizomatous hybrid begonias derived from an East Indian plant having rough-textured leaves patterned in silver and bronze and purple and red-brown with inconspicuous flowers):
beefsteak geranium, Begonia rex, king begonia, painted-leaf begoniaFrom the ODE community, based on WordNetadd/edit