Fig. 5. Oligotrichum parallelum. 



1 = Antheridial plant dry; d = antheridial disk, termination of a year's growth, 

 X i. 2 = Moist plant with capsule, X i. 3 = Capsule with lid, X 5. 4 = Peri- 

 stome showing wide membrane and doubling of teeth, X 150. 5 = Leaf showing 

 lamellae on upper surface, X 15. 6 = Leaf showing teeth and lamellae on back, X 15 

 7 = Leaf-tip. X 65. 8 = Cross section of leaf showing lamellae, X 65. 9 = Cross 

 section of leaf margin, X 250. 10 = Cross section of a few lamellae showing smooth 

 and unthickened marginal cells, X 250. 



