f. « 



Fig. 28. Polytrichum strictum. 

 1 and 2 = Moist plants with capsules, X i. 3 = Dry antheridial plant, X i. 4 

 = Dry archegonial plant, X i. 5 = Immature capsule with calyptra, X 5. 6 and 

 7 = Capsules, X 5- 8 = Peristome, X 150. 9 and 10 = Leaves showing lamella: on 

 upper side, X 15- H and 12 = Leaf tips, X 65. 13 = Cross section of leaf, X 65. 

 14 = Cross section of a few lamellae showing flask-shaped marginal cells, X 250. 



