Puerto Rican Hat Palm
This stunning palm is one of the largest and fastest growing in the genus Sabal. It is native to the Caribbean Islands of Puerto Rico and Hispaniola, where it is quite common in a number of different habitats. It sports a thick, smooth grey trunk and a dense crown of strongly costapalmate, bluish-green leaves. In cultivation it is as easy as any other Sabal and even though not quite as hardy to freezing temperatures as most of its cousins, it will withstand an occasional icing and will flourish in most tropical and warm temperate climates with hot summers. Once established, it is also hardy to drought and coastal conditions. It is S. causiara as opposed to S. causiarum, by the way, according to the international laws of nomenclature where the feminine ending is required for the specific name if present in the generic name (as in S. bermudana, S. mexicana, S. uresana, S. etonia etc.).