PLATE XXX. 



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



NOTE. Nachet's objectives i, 3 and 5, oculars i and 2, with camera lucida. 

 All drawings are reduced % in photo-engraving. The magnification figures 

 here printed are true for the drawings as printed. 



FIGS. 



a-i. Cynodontium treleasei. 



a. Entire plant, natural size. 



b. Leaf (X 34)- 



c. Apex of the leaf ( X 135)- 



d. Perichsetial leaf ( X 34)- 



e. Capsule ( X 13)- 

 ,/. Lid (X 30). 



g. Basal areolation of the leaf ( X 



h. Marginal areolation in the middle ( X 2 7) 



/'. Areolation in the upper part ( X 2 7) 



2, a-b. Dichodontium pellucidum kodiakanum. 



2, a. Leaves (X 13)- 



2, b. Apex of the leaf ( X 60). 



3, a-f. Dicranum subflagellare. 

 3, a. Entire plant, natural size. 

 3, . Leaf (X 26). 



3, c. Apex of the same ( X 135)- 



3, d. Basal areolation ( X 135)- 



3, e. Areolation in the middle of a leaf ( X 270). 

 3,/. Areolation in the upper part ( X 2 7)' 



4, a-e. Trichostomum cuspidatissimum. 

 4, a. Entire plant, natural size. 



4, b, b. Leaves (X35)- 



4, c. Basal areolation ( X I 35) 



4, d. Areolation in the middle of a leaf ( X 135)- 



4, e. Areolation of the upper part ( X 1 35)- 

 [348] (308) 



