Keys thatch
Leucothrinax morrisii

The trunk is eight inches in diameter and the leaves may be three feet wide on a long petiole.  Dark green on top with a white underside make this an outstanding specimen or, as in this picture, an eye catching mass. 

Native to the lower Keys in coral rock soils with organic matter and some underlying moisture.  It will tolerate salt spray yet not flooding and does well up to Palm Beach County.  No additional water is needed once established.

This tree mixes well with Lignumvitae, gumbo limbo, pigeon plum, Joewood and other Keys plants.  The small white berries are favored by birds and the leaves are a larval food for the monk skipper.