414 THE ANATOMY OF WOODY PLANTS 



subterranean and in the aerial stem. Only continued investiga- 

 tion will show the real significance of the anatomical situation 

 exemplified in these cohorts or orders. 



FIG. 286. Diagrams to illustrate the distribution of amphivasal bundles in the 

 monocotyledons. 



The general anatomical configuration of the monocotyledons 

 in the present condition of our knowledge warrants the conclusion 

 that this important class or division of the angiosperms formerly 

 possessed bundles arranged in a circular fashion and characterized 

 by secondary growth. This condition is indicated by the study 

 of conservative organs and regions and seems to justify the inference 



