Question: Rhapidophyllum and Portea, are native to the United States?

Context paragraphs:
Portea: Portea is a genus of the botanical family Bromeliaceae, subfamily Bromelioideae.  It is native to the Atlantic coast of Brazil.

Rhapidophyllum: Rhapidophyllum hystrix, the needle palm, is a palm, the sole member of the genus Rhapidophyllum.  It is native to the subtropical southeastern United States.  Endemic populations can be found from coastal southeast South Carolina, southward to Florida and west across the coastal plain of Mississippi and southern Alabama.  It is one of the most cold-hardy palms in the world, and can be found growing in several areas with warm temperate climates.

Supporting paragraphs: Rhapidophyllum Portea
Answer: no