Aloe vera
Native to the Hajar Mountains of northern Oman, this evergreen succulent perennial forms clumps by producing offsets around its base. Tall stalks bear tubular yellow flowers. The clear gel inside the leaves is used in skin-care products, cosmetics, and processed drinks. Clinical research suggests that applying the gel may help minor burns heal, although it can occasionally cause skin irritation. The bitter yellow latex beneath the leaf skin differs from the gel; swallowing it can cause abdominal cramps and diarrhea. It has naturalized in North Africa, the Mediterranean region, the Indian subcontinent, South America, and the Caribbean. Photographed in the department of QuindĂo, Colombia.
