J/ 



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mgc 



vV 



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Fig. 110. — M, diagrammatic transverse section of stem of Med id lorn anglica^ after Scott: 

 s£, concentric strands ; pd, periderm ; It, leaf trace ; N, diagram of part of transverse 

 section of stem of Medullosa Solmsi, after Weber and Stekzel, from Potonie : pla, 

 pli, larger concentric strands; st, smaller concentric strands; 0, transverse section 

 of stem of Lypinodendron Oldhamium^ after Williamson and Scott; /'. part of 

 woody zone of same ; (J, Bame, showing internal secondary wood and internal 

 phloem. 



