322 . 



FOUNDATIONS OF BOTANY 



'™:m f ' 



Fis. 228. — An Epipliytic Fem (Platycerivm) on a Tree Trunk. 



The more upright leaves next the trunk of the tree serve to collect water 

 and to accumulate a deposit of decaying vegetable matter, while the 

 outer leaves serve as foliage and hear spores. 



