%0 Journal Article %J American Journal of Botany %D 1992 %T Leaf gas exchange in Quercus macrocarpa (Fagaceae): rapid stomatal responses to variability in sunlight in a tree growth form %A Alan K. Knapp %B American Journal of Botany %V 79 %P 599 -604 %G eng %M KNZ00367 %R http://www.jstor.org/stable/2444875