C-3 plants

Species having a photosynthetic pathway that results in 3-carbon compounds as initial products of photosynthesis. Includes most legumes, forbs, and cool season grasses, as well as most trees and shrubs. Usually significantly less efficient users of soil and water nitrogen than are C-4 plants. Optimum temperature for photosynthesis and growth is 18 to 25° Celsius (64 to 77° Fahrenheit). See also “photosynthesis.” [Source: USDA National Plant Materials Manual]

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