First of all, not every weapon known to us by its ( presumed) name was mentioned  in that book. 
 Second, this book  listed weapons, not their modes of decoration. 
 No sense listing a dagger with  a flower-like handle, since there must have been examples of the same dagger without it, or with handles of a variety of different styles.
		 
		
		
		
		
		
		
		
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