“…The presence of a palisade parenchyma and intercellular spaces between the cells of the spongy mesophyll (Cutler et al 2008), as well as δ 13 C values < −20‰ (Winter & Holtum 2002), suggest that the species of Melastomataceae studied to date perform C 3 photosynthesis (e.g. Brito-Ramos et al 2010, Lüttge et al 1998, Mentik & Baas 1992, Somavilla & Graciano-Ribeiro 2011, Souza & Marquete 2000. However, Reginato et al (2009) reported the potential presence of the CAM pathway in four species of the epiphytic genus Pleiochiton.…”