Rice, tacca, arrowroot, oats, etc.
"Scientific American Supplement, No. 799, April 25, 1891" by Various
The large fleshy tubers of tacca, when scraped and frequently washed, yield a nutritious fecula resembling arrowroot.
"The Commercial Products of the Vegetable Kingdom" by P. L. Simmonds
It was cast by Pietro Tacca, and is now a fountain.
"Legends of Florence Collected from the People, First Series" by Charles Godfrey Leland