222 
A. G. Tanslcy. 
■ ' 
Fig. 67. Plcris aquilina. Vascular system of node seen from dorsal side, 
somewhat simplified. Internal system and lateral folds of leaf-trace darkly 
shaded. A portion of the dorsal meristcle of the outer cylinder is cut away 
to show branching of internal strands, c.s., compensation strand. Tanslcy. 
and Lulham. 
Fig. 68. Cyathen Imrayana. Transverse section of stem showing three 
leaf-gaps, with band-shaped cauline meristeles between. Leaf-traces consist 
of numerous strands. Small isodiametric accessory vascular strands arc seen 
in the pith and in the cortex. Sclerenchyma, black. From De Bary. 
