60 A TEXT-BOOK OP BOTANY 



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(1) Cladophylls. If the greenhouse smilax, often called 

 wedding smilax, be examined, the apparent leaves will be 

 discovered to be branches modified so as to assume the 

 form and work of leaves, each one of these leaf-like branches 

 standing in the axil of a minute scale-like leaf (Fig. 58, A). 

 Such branches are called cladophylls, which means " leaf-like 



B 



FIG. 58. Cladophylls: A, wedding smilax (the apparent leaves are the modified 

 branches, and the real leaves are the minute scales that subtend them); B, 

 Phyllocladus. 



branches." In the Australian region a group of evergreens 

 is characterized by bearing cladophylls; and the young 

 plantlet shows the gradual change of true green leaves 

 into little scales, and of branches into cladophylls (Fig. 

 58, B). In the common garden asparagus the apparent 

 slender, needle-like leaves are all cladophylls doing leaf 

 work. 



(2) Tendrils. It was shown ( 20) that leaves or parts 

 of leaves may develop as tendrils, and this is true also of 



