57 



(Fig. 2, O). The operculum is cut (jIT l)y a ring (A cell.s called ihe 

 annulus. Remove the operculum, then with a hand-lens care- 

 fully examine the rim of the capsule and note the fringe of teeth 



Fig. 2. £ is a moss plant, consisting of an upper or sporophj-te portion, com- 

 posed of a seta, surmounted by a capsule with calyptra, and a lower portion, the 

 gametophyte, consisting of rhizome, stem and leafy portion; F, capsule with lid 

 closed; H, the same, with lid removed; J, peristome in dry weather; K, the same 

 in wet weather, or before the maturity of the spores. 



