An Example of Leaf-enation in Allium ursinum L. 53 
free from the main blade, and were produced at a much lower level 
than the latter. His figure (1884, Fig. 70) of a double leaf of Tulifta 
Fig. 4. Xanthosoma appendiculatum. Transverse section of the double-bladed 
leaf just below the origin of the second blade. Region of the palisade 
parenchyma is shown by vertical lines, x 20. 
sylvestris seems to suggest a double and flattened condition of the 
“petiole,” but unfortunately the diagram is not complete. 
