PLATE XIV. 



Figs, i, a-e. Trichostomum sitkanum. 



I, a. Entire plant, natural size. 



I, ^, b. Leaves ( X 13) • 



I, c. Basal areolation of a leaf ( X i35)- 



I, d. Areolation in the middle ( X 135)- 



1, e. Areolation in the upper part ( X 135)- 



2, a-i. Pot f la heimii beringiana. 

 2, a. Entire plant, natural size. 

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



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



2, d. Part of the same ( X I35)- 



2, e. Basal areolation of the leaf ( X I35)- 



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



2, g. Areolation of the apex ( X I35J' 



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



2, i. Capsule ripe, in dry state ( X 13)' 



3, a-i. Barbula brachypoda. 



3, a. Entire plant, natural size. 



3, b, b, b. Lower leaves (X 13 )• 



3, c, c. Upper leaves ( X 13)- 



3, d, d. Perichietial leaves (X 13)- 



3, e. Basal areolation of the leaf ( X 135)' 



3. f. Areolation in the middle ( X I35)- 



3, g. Areolation of the upper part ( X I35)- 



3, h. Capsule in moist state ( X 13)' 



3, i. Portion of the annulus ( X^o). 



(350) 



