Harshberger : Plant formations of Nockamixon Rocks 665 



LiANES : The trees are festooned with such vines as Vi/is cor- 



difolia^ 

 Menisp 



rottindifolia 



Herbaceous crest species : The ground under the above- 

 mentioned trees and shrubs is covered by Tmpatiens fulva (/. 

 hiflord), Sniilacina racemosa^ Arisaenia triphyUmn^ and Scdum Tele- 



Figure 4. Details of Rock Cliff Plant Formation with the Deciduous Forest 

 Formation to the right, covering the talus slopes. 



retains Its green color as late as 



pJiitim {S. purpiireian), which 



November, and in addition the botanist finds the plants in the list 



below. • 



Crest rock mosses : According to Lydia P. Borden, the crest 

 rocks are characterized by Catharinea angitstata, Polytrichum coni- 

 imiiie^ P. piliferum, Leiicobrytim glauann, Wcisia viridula, Funaria 

 hygrometrica, Bryiim rosenin^ Mnitim sylvaticum^ CirriphylUnn 

 Boscii^ Climaciuni americannm^ and C. dendroides. 



List of additional crest herbs (furnished by Dr, S. P. Seese) 



Selagbiella nipestris, 

 Smilax herbacea, 

 Liliiun philadelphicuni^ 



Hypo, \ is erecta^ 

 SpiraiLthes gracilis^ 



i\ 



ceniua, 



