CAM plants

Abbreviation for “Crassulacean Acid Metabolism.” Species whose photosynthetic pathway primarily involves fixation of carbon dioxide during the dark period. Includes desert succulent plants such as cactus. Under good moisture and temperature conditions, carbon fixation may occur in the light via either C-3 or C-4 pathways. Generally the least productive of the three photosynthetic pathways. See also “photosynthesis.” [Source: USDA National Plant Materials Manual]

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