The rounded radish and the elongated radish, mustard and field mustard, Greek gourd with the Egyptian [gourd], or the ash [gourd] — even though they are similar to one another, they are kilayim with one another.

With respect to trees: Pears and gall-nut pears, quinces and hawthorns are not kilayim with one another. Apples and wild-apples, peaches and almonds, jujube and wild jujube — even though they are similar to one another, they are kilayim with one another.