The Zamia integrifolia.
1837. The inhabitants [of Toampe] living principally on fish, turtle, and coonti; the last they bring from the main [land].John L. Williams, The Territory of Florida, p. 33.
1852. [He] discovered a fine patch of Coontah or arrowroot, from which a beautiful flour can be manufactured.F. R. Goulding, Young Marooners, p. 173. (N.E.D.)