PLATE XXXVI. 



[Proc. Wash. Acad. Sci., Vol. IV, PI. XIX.] 



FIGS. I, a-f. Bryum ateleostomum. 



i, a. Entire plant, natural size. 



i, b, b. Leaves ( X 13)- 



i, c. Apex of a leaf ( X 6o) 



i, d. Basal areolation of the same ( X 135)- 



1, e. Marginal areolation, in the middle ( X 1 35)* 

 i,/. Capsule ripe, in dry state ( X 13)- 



2, a-g. Bryum Jieterogynum. 



2, a. Female plant, natural size. 



2, b. Male plant, natural size. 



2, c. Leaf of the female plant ( X 13)* 



2, d. Apex of the same ( X 6)- 



2, e. Basal areolation ( X 135)- 



2,/. Cells in the middle ( X 135)- 



2, g. Young capsule in dry state ( X *3) 



3, a-g. Bryum laurentianum. 



3, a. Entire plant, natural size. 



3, b, b. Stem-leaves ( X26). 



3, '. Branch-leaf (X 26). 



3, c. Transverse section of a leaf ( X 60). 



3, d. Transverse section of the costa ( X 2 7) 



3, e. Basal areolation ( X 1 35)- 



3,/. Marginal areolation in the middle ( X I 35) 



3, g. Areolation of the apex ( X I 3S) 

 [360] (320) 



