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PRACTICAL BOTANY 



Fio. 3. Diagram illustrating the course of the vascular bundles in the stem of 

 Clematis integrifolia : each leaf-trace of the opposite pairs of leaves consists of 

 three bundles : a is the median bundle, /3 and y are the lateral bundles of the 

 uppermost pair of leaf-traces. This figure is constructed from a model prepared 

 in the Botanic Institute in Graz. (After Reinke.) 



