PLATE XVIII. 



Brymn drcfanocarfum. 

 Entire plant, natural size. 

 Leaves ( X i3)- 



Transverse section of a leaf ( X6o). 

 Part of the same ( X i35)' 



Marginal areolation in the middle of a leaf ( X i35)- 

 Areolation of the apex ( X i35)- 

 Young capsule ( X 13)' 

 Capsule ripe, in dry state ( X 13)' 

 Bryuin cylindri'co-arcuatnm. 

 Entire plant, natural size. 

 Leaves ( X 13)- 



Transverse section of a leaf ( X 60). 

 Basal areolation ( X i35)' 

 Cells in the middle of a leaf ( X ISS)- 

 Areolation of the apex ( X ^2,S)- 

 Capsule in dry state ( X 13)' 

 Bryuin leptodiciyoii. 

 Entire plant, natural size. 

 Leaves ( X 13)- 

 Basal areolation ( X I35)' 

 Cells in the middle of a leaf ( X 135)' 

 Areolation of the apex ( X i35)- 

 Capsule in moist state ( X 13)- 

 Bryum pseudo-stir tofii. 

 Entire plant, natural size. 

 Stem-leaf ( X 13)- 

 Branch-leaves ( X 13)' 

 Basal areolation ( X I3S)- 

 Cells in the middle of a leaf ( X ^ZS)- 

 Capsule ripe, in moist state ( X 13)- 

 Capsule in dry state ( X 13)- 



(358) 



