PLATE XIV. 



Figs, i, a-e. Trichostomum siihanum. 



i, a. Entire plant, natural size, 



i, b, b. Leaves ( X J 3)- 



i, c. Basal areolation of a leaf ( X x 35)- 



i, d. Areolation in the middle ( X !35)- 



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



2, a-i. Pottia heimii beringiana. 

 2, a. Entire plant, natural size. 

 2, b, b, b, b. Leaves ( X l 3)- 



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



2, d. Part of the same ( X *35)- 



2, e. Basal areolation of the leaf ( X !35)- 



2,f. Areolation in the middle ( X ^-ZS)- 



2, g. Areolation of the apex ( X J 35J« 



2, h. Capsule in moist state ( X l 3)- 



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



3, a-i. Barbula brachyfioda. 



3; a. Entire plant, natural size. 



3, b, b, b. Lower leaves (X I 3)- 



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



3, d, d. Perichsetial leaves ( X T 3)- 



3, e. Basal areolation of the leaf ( X I 35)- 



3. f. Areolation in the middle ( X I 35)- 



3, g. Areolation of the upper part ( X I 35)- 



3, k. Capsule in moist state ( X x 3)- 



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



(350) 



