- sea island cotton, tree cotton, Gossypium barbadense - small bushy tree grown on islands of the Caribbean and off the Atlantic coast of the southern United States; yields cotton with unusually long silky fibers
--1 is a kind of cotton, cotton plant
- tree cotton, Gossypium arboreum - East Indian shrub cultivated especially for ornament for its pale yellow to deep purple blossoms
--2 is a kind of cotton, cotton plant