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Drawing$ of a model of a set of typical ray-initia! cells in a Pmactae stem. Progeny cells are not shown A Thnae-dimensional perspective view. B Radial vtew (wlth respect to stem). The vertical lines represent the axial course of adjacent fusiform-initiOl cells. C Tangential view (wlth respect to stem). (Redrawn after Wodzicki and Brown 1973)