Canna~Fangled Abstracts Photosynthetic response of Cannabis sativa L., an important medicinal plant, to elevated levels of CO2 Journal List > Physiol Mol Biol Plants > v.17(3); 2011 Jul > PMC3550578 Physiol Mol Biol Plants. 2011 Jul; 17(3): 291–295.…Freedom WaresMay 25, 2011