Roystonea

Roystonea

Roystonea O. F. Cook.
Engl.: royal palm.

Roystonea oleracea

Roystonea oleracea (Jacq.) O. F. Cook.
Engl.: Carribean royal palm, cabbage palm, caribee palm, West Indian royal palm.
Deu.: Karibische Königspalme, Kohlpalme.
Sven.: kålpalm.
Bot. syn.: Areca oleracea Jacq., Euterpe caribea Spreng., Oreodoxa oleracea (Jacq.) Mart.

Roystonea regia

Roystonea regia (Kunth) O. F. Cook.
Engl.: Cuba royal palm.
Deu.: Kubanische Königspalme.
Suom.: kuningaspalmu.

I have no articles for this botanical term, but there might be some for the next level down (if found).