PLATE XXXV. 



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



FIGS. I, a-h. Bryum drepanocarpum. 



I, a. Entire plant, natural size. 



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



i, c. Transverse section of a leaf ( X^o)- 



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



i, e. Marginal areolation in the middle of a leaf ( X 



i,f. Areolation of the apex (X 1 35)> 



i, g. Young capsule ( X 13)- 



1, h. Capsule ripe, in dry state ( X I 3) 



2, a-g. Bryum cylindrico-arcuatum. 

 2, a. Entire plant, natural size. 

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



2, c. Transverse section of a leaf ( 



2, d. Basal areolation ( X 135)- 



2, e. Cells in the middle of a leaf ( X 



2,/. Areolation of the apex ( X 135)- 



2, g. Capsule in dry state ( X I 3)- 



3, a-f. Bryum leptodictyon, 



3, a. Entire plant, natural size. 



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



3, c. Basal areolation ( X I 35) 



3, d. Cells in the middle of a leaf ( X 135) 



3, e. Areolation of the apex ( X J 35) 

 3,y. Capsule in moist state ( X 13)- 



4, a-g. Bryum pseudo-stir toni. 



4, a. Entire plant, natural size. 



4, . Stem-leaf (X 13)- 



4, c, c, c. Branch-leaves (X J 3) 



4, d. Basal areolation ( X 135)- 



4, e. Cells in the middle of a leaf ( X 135). 



4,yi Capsule ripe, in moist state ( X J 3)- 



4, g. Capsule in dry state ( X 13)- 

 [358] 



