Fig. 5. Results of multidimensional scaling analysis. This plot was prepared by clustering marginal regions based on the first two primary dimensions identified in the pairwise distance matrix. The first dimension accounts for the greatest axis of dissimilarity in the data, and clusters margins from the two cotyledons and their close-mapping partners away from each other across the sagittal longitudinal plane. The second dimension accounts for the next largest degree of dissimilarity in the data, and clusters the left and right margins of the cotyledons and leaf 4 away from each other across the frontal longitudinal plane. Both dimensions account for 93.7% of the variation in the original data matrix. Taken together these data highlight the fact that the daughters of the first apical cell division are not randomly apportioned to all organ margins with uniform frequency. C1L, C1R, C2L and C2R indicate the left and right margin, respectively, of cotyledon 1 and 2. Other labels similarly indicate the left and right marginal regions of true leaves 1-4.

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