THE BRYOPHYTA OF ICELAND 



529 



green and reclangular, 0.018 mm. broad and 0.070 mm. long, in its upper half, 

 0.010 mm. broad and 4—7 times as long, with sinuous primordial utricle. 



Fig. 17. Amhliislefiiiim Iriciwpodinm (Schultz). Habit (X 3). 



Fig. 18. Ambhjstegium trichopodiiim (Schultz) Br. our. a, Steui-lcaves aiul (). branch-leaves 



(X20); c, loaf-cclls ncar margin (XI 20). 



