PLATE XXXVII. 



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



Figs, i, a-g. Bryum treleaset. 



I, a. Entire plant, natural size. 



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



I, c, c. Transverse section of a leaf ( X 135)« 



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



I, e. Marginal areolation in the lower part ( X I35)« 



!,_/■. Areolation of the apex ( X I35)' 



1, g. Young capsule, in moist state ( X ^S)* 



2, a-h. Bryum agattuense. 



2, a. Entire plant, natural size. 



2i b, b. Stem-leaves ( X 13)- 



2, c. Branch-leaf ( X ^i)- 



2, d. Basal areolation ( X 135)- 



2, e. Areolation in the middle ( X I35)' 



2,y. Areolation of the apex ( X i35)' 



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



2, b. Capsule ripe, in moist state ( X 13)' 

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