8. 



top of the tree the fern was generally replaced ■by- 

 lichens. Very commonly thetfem was found growing in 

 close association with the liverwort Frullania virginica. 

 with the mosses Entodon cladorrhi zans . Clasmat odon 

 parvulus and in a few cases also with Orthotrichum 







ohiense or Leucodp .julaceus . Practically the only lichen 

 associated with the polypody was Parmelia centrata . 



fm^ 



Fig.5 

 Crataegus sp, bearing the epiphytic polypody. 



This form was abundant on the lower branches of the 

 tree and was almp^t imbedded in the mosses, Other 

 lichens occurred on thethigher parts of thetree where 

 neither mosses nor ferns were present, The latter forms 

 were;Ramalina calicaris.Sticta sp, « Physcia stellaris. 

 Anaptychia speciosa . ajid Getraria aurescens ,The only 

 algae found on the junipers were Tolypothrix sp. 



