Lüttge U., Ability of crassulacean acid metabolism plants to overcome interacting stresses in tropical environments, AoB PLANTS, 2010, 2010:plq005, doi: 10.1093/aobpla/plq005
A review of CAM physiology and its importance in tropical habitats, covering carbon balance, water conservation and variation in daily metabolic phases. It discusses Galápagos lava fields and the occurrence of Brachycereus in lava fissures, among other topics. The author notes that he knew of no ecophysiological studies of this species when preparing the paper.