Beown. — On the Genus Gymnostomum. 301 



(All the figures of these mosses, as well as my previous 

 contributions in this direction, are drawn with the assistance 

 of a camera lucida to one scale, for the purpose of greater 

 facility of comparison.) 



EXPLANATION OF PLATES XXXV.-XXXVII. 

 Plate XXXV. 



Gymnostomum calcareum. 

 Fig. 



1. Capsule. 



2. Perichsctial leaves. 



3. Stem leaf (lower). 



4. Stem leaf (upper). 



Gymnostomum i)ygmcsum. 



1. Capsule. 



2. Perichsetial leaves, 



3. Upper stem leaf. 



4. Stem leaves. 



Gymnostomum ligulatum. 



1. Capsule. 



2. Perichsetial leaves. 



3. Stem leaves. 



Plate XXXVI. 

 Gymnostomum waimakaririense. 

 Fig. 



1. Capsule. 



2. Perichsetial leaf. 



3. Stem leaves. 



Gymnostomum stevensii. 



1. Capsule. 



2. Perichsetial leaves. 



3. Stem leaves (u^jper). 



Gymnostomitm magnocai-pum. 



1. Capsule. 



2. Perichsetial leaf (inner). 



3. Perichsetial leaf (outer). 



4. Stem leaves. 



Plate XXXVII. 

 Gymnostomum longirostnim. 

 Fig. 



1. Capsule. 



2. Calyptra. 



3. Perichsetial leaves. 



4. Stem leaf (upper). 



5. Stem leaf (lower). 



Gymnostomum lorightii. 



1. Capsule. 



2. Perichsetial leaf (inner). 



3. Perichsetial leaf (outer). 



4. Stem leaves. 



