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. 



FlGS. I, a i. Cynodontium treleasei. 



i, a. Entire plant, natural size. 



i,*. Leaf (X 34)- 



i, c. Apex of the leaf ( X J35)- 



I, d. Perichuetial leaf ( X34)- 



i, e. Capsule ( X 13)- 



i,/. Lid (X 3). 



i, g. Basal areolation of the leaf ( X X 35)- 



i, Jt. Marginal areolation in the middle ( X 270). 



1, /. Areolation in the upper part ( X 2 7)- 



2, a-b. Dichodontium pcllucidum kodiakanum. 

 2, a. Leaves ( X I 3)- 



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



3, a-f. Dicranum subflagcllare. 

 3, a. Entire plant, natural size. 

 3, . Leaf (X 26). 



3, c. Apex of the same ( X !35)- 



3, d. Basal areolation ( X I 35)- 



3, e. Areolation in the middle of a leaf ( X 2 7)- 

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



4, a-e. Trichostomtim ciispidatissimum. 

 4, a. Entire plant, natural size. 



4, b, b. Leaves ( X35)- 

 4, c. Basal areolation ( X 1 35)' 

 4, d. Areolation in the middle of a leaf ( X I 3S)- 

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

 [348] (305) 



