MELINDA HOLDEN / AGSTOCKUSA / SCIENCE PHOTO LIBRARY MELINDA HOLDEN / AGSTOCKUSA / SCIENCE PHOTO LIBRARY
Aloe plants (Aloe sp.). Aloe plants are succulents. They are adapted to an arid environment and characterised by fleshy water- storing leaves. The surface of the leaves is covered in a thick, waxy outer layer to prevent loss of water by evaporation. Photographed at Flavel Garden, San Diego in California, USA.
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