The quince tree ( Cydonia oblonga) is in the rose family along with apples and pears, but is the only member in the Cydonia group. The fruit is tough to cut, and the cut flesh is the color of an apple ...
A quince is a tree fruit that resembles a pear (or bulbous apple). And from the looks of it, it'd be the kind of thing you could snag right off the branch and bite into at your leisure ...