The leaf venation as formed in a tensorial field

@article{Couder2002TheLV,
  title={The leaf venation as formed in a tensorial field},
  author={Yves Couder and Ludovic Pauchard and Catherine Allain and M Adda-Bedia and St{\'e}phane Douady},
  journal={The European Physical Journal B - Condensed Matter and Complex Systems},
  year={2002},
  volume={28},
  pages={135-138}
}
Abstract:The veins of plant leaves exhibit a large variety of morphologies. They are often thought to result from their growth in a concentration scalar field. It is shown here that the topology of these patterns rather corresponds to what is expected from growth in a tensorial stress field. This is demonstrated by analogic experiments performed on crack formation in gel films where many characteristic venation patterns, of both dicotyledons and monocotyledons, were reproduced. This suggests… 

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