Figure 4
From: Rheophytic Osmunda lancea (Osmundaceae) exhibits large flexibility in the petiole
For anatomical analysis, (a) SEM image of petiole cross-section in the subepidermal cortex; bar = 100 µm; (b) comparison of cell wall fraction per unit area; (c) transverse cell area in the petiole. Epidermis and subepidermal cortex indicate yellow and red, respectively. Box whisker plots marked with different letters differ significantly according to t-test (p < 0.05). Crosses indicate position of the mean.
