This is a picture of an Aloe Vera plant. It is an example of a CAM plant. Around 8% of plants are CAM plants, and most of them are succulents. You can tell that the Aloe Vera plant pictured is a CAM plant by its fleshy leaves. During the dark reaction of photosynthesis, CAM plants use both the C3 and the C4 cycles. They are best suited to hot, dry environments like deserts.