Bkown. — On tlie Genus Pottia. 295 



Pottia stevensii. 



1. Capsule and operculum. 



2. Pericliaetial leaf (inner). 



3. Perichffitial leaf (outer). 



4. Stem leaves (upper). 



Plate XXXII, 

 Fig. Pottia serrata. 



1. Capsule and operculum. 



2. Pericliffitial leaf (inner). 



3. Perichsetial leaf (outer). 



4. Stem leaves (upper). 



Pottia longifolia. 



1. Capsule and operculum. 



2. Calyptra. 



3. Perichsetial leaf (inner). 



4. Stem leaf (upper). 



5. Stem leaf (lower). 



Pottia bickertonii. 



1. Capsule and operculum. 



2. PericliDstial leaf (inner). 



3. Stem leaf (upper). 



4. Stem leaf (middle). 



5. Stem leaf (lower)._, 



Plate XXXIII. 

 Fig. Pottia macrocarpa. 



1. Capsule and operculum. 



2. Perichsetial leaf (inner). 



3. Stem leaf (upper). 



4. Stem leaf (middle). 



5. Stem leaf (lower). 



Pottia Iconardi. 



1. Capsule and operculum. 



2. Calyptra. 



3. PerichEetial leaf (inner). 



4. Perichffitial leaf (outer). 



5. Stem leaf (upper). 



Pottia grata, 



1. Capsule and operculum. 



2. Calyptra. 



8. Perichsetialleat (inner). 



4. Perichsetial leaf (outer). 



5. Stem leaf (upper). 



Plate XXXIV. 

 Fig. Pottia assimilis. 



1. Capsule and operculum. 



2. Perichsetial leaf (inner). 



3. Perichffitial leaf (outer). 



4. Stem leaf (upper). 



5. Stem leaves (middle). 



