Water transport in plants obeys Murray's law

@article{McCulloh2003WaterTI,
  title={Water transport in plants obeys Murray's law},
  author={Katherine A. McCulloh and John S. Sperry and Frederick R. Adler},
  journal={Nature},
  year={2003},
  volume={421},
  pages={939-942}
}
The optimal water transport system in plants should maximize hydraulic conductance (which is proportional to photosynthesis) for a given investment in transport tissue. To investigate how this optimum may be achieved, we have performed computer simulations of the hydraulic conductance of a branched transport system. Here we show that the optimum network is not achieved by the commonly assumed pipe model of plant form, or its antecedent, da Vinci's rule. In these representations, the number and… 
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