Osborne, Colin P Ecological selection pressures for C4 photosynthesis in the grasses. [electronic resource] - Proceedings. Biological sciences May 2009 - 1753-60 p. digital Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't ISSN: 0962-8452 Standard No.: 10.1098/rspb.2008.1762 doi Subjects--Topical Terms: Adaptation, PhysiologicalEcosystemLikelihood FunctionsPhotosynthesis--geneticsPhylogenyPoaceae--geneticsSelection, GeneticSpecies Specificity