Photosynthesis (Net CO2 Exchange Rate) References
Begonia x hiemalis Fotsch. [Begonia]
Mortensen, L.M., and Ulsaker, R. 1985. Effect of CO2 concentration and light levels on growth, flowering and photosynthesis of Begonia x hiemalis Fotsch. Scientia Horticulturae 27: 133-141.