A common characteristic of most Dioscoraleans is a thick, starchy underground stem called a tuber .
(A common characteristic of most Dioscoraleans; is; a thick, starchy underground stem called a tuber) (a thick, starchy underground stem; called; a tuber)
A common characteristic of most Dioscoraleans a thick, starchy underground stem
is called
a thick, starchy underground stem called a tuber
a tuber