1. Botanical Garden, Plant Biomechanics Group University of Freiburg Freiburg im Breisgau 79085 Germany
2. Institute for Structural Mechanics University of Stuttgart Stuttgart 70550 Germany
3. TUM School of Engineering and Design Department of Engineering Physics and Computation Technical University of Munich Garching b. München 85748 Germany
4. Cluster of Excellence livMatS @ FIT – Freiburg Center for Interactive Materials and Bioinspired Technologies University of Freiburg Freiburg im Breisgau 79110 Germany
5. Department of Biology Technical University of Darmstadt Botanical Garden Darmstadt 64287 Germany