- Roystonea, genus Roystonea - a monocotyledonous genus of West Indian feather palms
--1 is a kind of monocot genus, liliopsid genus
--1 is a member of
--1 has members: royal palm, Roystonea regia; cabbage palm, Roystonea oleraceaPalmae, family Palmae, Palmaceae, family Palmaceae, Arecaceae, family Arecaceae, palm family