922 



IX. MUSCL 



9 rolytrichiim. 

 Capeule deprived of 



its operculum, 



showing the pcri- 



Ftomium and the 



epiphmgm (IPIMV. ). 



9 Polyfrichum. 

 Capsule capped by 

 a calyptra clothed 



externally with 

 silky hairs (mag.). 



9 Polytricfiiim. 

 Capsule strip)>ed 



of the outer 

 cnlyptra (mag.). 



9 fiolytrirhum. 

 Capsule cut trans- 

 versely, showing 

 the 4-l>ranchl 

 columella, and the 

 sporiferous sac 

 (mag.). 



ON 



/'nlvtrichuin tomntunt. 

 Top of J stem (mag.). 



i'olytrichum commune. 



Antherozoids (mag.). 



(Thuret.) 



J'oli/trictium 

 commune .-. 



Pnli/lrifhum 

 commune <J . 



9 Polylrichvm. 

 Capsule stripped of 

 it - calyptra (mag.). 



Hypntim pojntleum. 

 Capsule and calyptra. 



Polytriehum commune. 



Faraphyses and anthcridia, one of which emits 

 antherozoids (mag.). (Thuret.) 



Hypnum populcvm (mag.). 



Hypnum populetim 

 Dehiscent capsule. 



