Photosynthesis (Net CO2 Exchange Rate) References
Ambrosia cordifolia (Gray) Payne [Tuscon Burr Ragweed]
Mott, K.A. and Michaelson, O. 1991. Amphistomy as an adaptation to high light intensity in Ambrosia cordifolia (Compositae). American Journal of Botany 78: 76-79.