KnowraRoystonea regiaLinked fromLinked fromThe 2 pages that link to Roystonea regia, each with the reason it gives.All 2Broader topic 1Compared with 1RoystoneaBroader topic: It is the best-known species and Cuba’s national tree.Roystonea oleraceaCompared with: It is a frequently cultivated relative that can be confused with Roystonea oleracea.