— lO 



septate gemmae, which may account for the rarity of the fruit. The broad 

 apex, entire except for papillae, and erect margins, render sterile specimens 

 easy to determine. All other species have the margins revolute or involute. 

 O. gymiiosiomujn Bruch has been found in Newfoundland. It is closely^ 

 related to this species but has involute leaves and no peristome. Collectors 

 should look out for it. 



Plate IV.— C. obtMsifolium (Bry. Eur. PI. 208). 



Figs. 3, 4, 5 and 6— Leaves from below upwards. Fig. 7— Showing cell- 

 ular structure. Fig. 10— Capsule. Fig. 13— Peristome highly magnified. 

 Fig. 14— Segments of the same. Fig. 19 — Propagula. 



