PLATE XIX. 



3. P. 



4 



Pogonatum nanum. 



a. plant, nat. size. 



b. leaves, magnified. 



c. section of leaves, mag. 

 P. aloides. 



a. plant, nat. size. 



b. leaves, magnified 

 hercynicum. 



a. plant, nat. size. 



c. sporangium, magnified, 

 Atrichum undulatum. 



a. plant, nat. size 



b. leaf, magnified. 



5. Diphyscium foliosum. 



a. plants, nat. size. 



b. plants, magnified. 



c. sporangium, mag. 



6. Buxbaumia aphylla. 



a. plants, nat. size. c. veil, magnified. 



b. sporangium, magnified. d. peristome, magnified 



e. a portion of inner peristome, magnified. 



7. Tetrodontium Brownianum. 



a. plant, nat. size. 



d. section of one of the lamellae, mag. 



e. young veil, magnified. 

 /. sporangium, magnified. 



c. young veil, magnified. 



d. sporangium, magnified. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. sporangium, without lid. 



d. veil, magnified. 



e. peristome, magnified. 

 /. leaf, mag., with two perichsetial leaves. 



d. perichsetial leaves, magnified. 



e. sporangium, magnified. 

 /. peristome, magnified. 



b. plant, magnified. 



c. leaf, magnified. 

 8. Tetraphis pellucida. 



a. plant, nat. size. 



b. gemmiferous plant, nat. size. 



c. leaf, magnified. 



d. gemmiferous apex, magnified. 



e. young veil, magnified. 



/. sporangium with lid, magnified. 

 g. sporangium without lid. 



h. peristome, magnified (the transverse lines are too strongly 

 marked). 



