Rhapidophyllum and Portea, are native to the United States?
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.
Manfreda longiflora Manfreda longiflora is a species of flowering plant in the family Asparagaceae that is native to the Lower Rio Grande Valley of Texas in the United States and northern Tamaulipas in Mexico. Common names include amole de río, longflower tuberose, and Runyon's huaco. The type specimens were sent by botanist and photographer Robert Runyon (1881–1968) to the New York Botanical Garden in 1921. Consequently, the species was initially placed in a monotypic genus named in his honour, "Runyonia", by Joseph Nelson Rose. "M. longiflora" is a rhizomatous perennial with 3–7 prostrate leaves in a basal rosette. It inhabits hills, terraces and slopes in the semi-arid Tamaulipan mezquital.