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Fig. 4. Biomechanical results of entire data set including unbiased samples from over 13 plant stems. The entire data set includes all types of axes of all stages of growth and ontogeny. A, Double logarithmic plot of flexural stiffness (EI) against axial second moment of area (I) (see text for explanation of neutral line). B, Double logarithmic plot of structural Young’s modulus (Estr) against axial second moment of area (I).
