United States visas were issued to 8.9 million foreign nationals visiting the United States and to 482,000 immigrants in 2012. A foreign national wishing to enter the U.S. must obtain a visa unless he or she is.
Known for its showy flowers, the genus Mandevilla includes plants that were formerly called Dipladenia. There are about 100 species of this tropical American woody vine. Most species overwinter only in the tropical South.
The red-leaf hibiscus, H. acetosella, commonly called false roselle or African rose mallow, is sometimes confused with roselle. This hibiscus, an ornamental plant from tropical Africa, bears red stems up to 8 feet tall and is hardy from USDA Zones 7-11.