Figure 2
From: Rheophytic Osmunda lancea (Osmundaceae) exhibits large flexibility in the petiole
(a) Comparison of the long/short diameter ratio in the cross-section of petiole. Box whisker plots marked with identical letters were not significantly different according to t-test (p < 0.05). Crosses indicates position of the mean. (b) Relationship of transverse area of petiole and lamina area; circles indicate O. lancea and squares indicate O. japonica.
