PLATE XXXV. 

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



FlGS. 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 I 35)- 



I, e. Marginal areolation in the middle of a leaf ( X 135). 



i,f. Areolation of the apex (X I 35)- 



I, g. Young capsule ( X I 3)- 



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



2, a-g, Bryum cylindrico-arcuatum. 

 2, a. Entire plant, natural size. 

 2, 6, b. Leaves ( X 13)- 



2, c. Transverse section of a leaf ( X 6o) 



2, d. Basal areolation ( X 1 35)- 



2, e. Cells in the middle of a leaf ( X I 3S) 



2,/i Areolation of the apex ( X 1 35)- 



2, g. Capsule in dry state ( X 1 3)- 



3, a-f. Bryum leptodictyon. 



3, a. Entire plant, natural size. 



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



3, c. Basal areolation ( X 1 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-stirtoni. 



4, a. Entire plant, natural size. 



4,*. Stem-leaf (X 13)- 



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



4, d. Basal areolation ( X I 35) 



4, e. Cells in the middle of a leaf ( X J3S). 



4,/l Capsule ripe, in moist state ( X I 3)> 



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

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