The fruits of Cactaceae are many-seeded berries. Since the ovary is often embedded in stem tissue, the berry is likewise. Hence, areoles with spines and/or glochids are often found on the outside of the berries. The berries of some species of Opuntia are edible and sold in supermarkets. However, be sure to remove the skin and glochids before trying to eat one! (Ask Dr. Downie about this!)
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