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typical. uliginosum. perigoniale. minus. 
Fig. 23. Polytrichum commune and varieties. 
1 = Dry plants, X 1. (The typical plant often has more erect leaves.) 2 = Tip 
of plant showing perichetial leaves and capsule, X 1. 3 = Capsules, X 5. 4 = Pores 
from surface of capsule; the arrows point up in capsule, X 365. = Cross sections 
of a few lamellz showing their height, and depth of notching of apical cell, X 250. 

