362 musci. 



3. Pistillum as it would appear on a longitudinal section 

 sometime after impregnation, surrounded at its base by 

 processes, shell of the pistillum after forming calyptra, 



b. dislocated cellular tissue, very lax, c. seta, the loose 

 tissue is to give room for the growth of the seta, not 

 found towards base pistillum. 



4. Long section of young theca, a. outer coat b. cavity filled 

 with reticulate branched cellular green tissue, of which 



c. is the unaltered or unabsorbed portion, d. commence- 

 ment of inner membrane and columella, e. opercle. 

 Stomata fully developed. 



5. Long section more advanced, (same letters,) 5. a. colu- 

 mella and inner membrane detached, a few cellular 

 processes adhering to inner membrane. 



6. More advanced a. b. c. d. as before, e. space between 

 inner surface of inner membrane and columella, f. oc- 

 cupied by sporules, g. opercle, /*. rim of opercle and an- 

 nular mouth of outer membrane of theca, i. peristome — 

 the outer ? 



6.«. Part of inner membrane or rather apex of columella 

 and part of outer peristome quite uncoloured, 6. c. an- 

 nulus, 6. b. sporule. 

 7- Theca more advanced, same letters have same reference : 

 peristomes both present^ inner little developed, outer orangish. 

 The inner membrane and columella now occupy the chief 

 part of the theca. 



7. a. sporula, 7- b annulus. 



Phascum and Funaria have two sorts of anthers and the 

 reticulation is the same. 



Can this in any way help us to a natural classification. 



PI. CX. Fig. II. 



1. Columella etc. of a young theca age of no. 4 PI. CXIII. 

 line of separation ? of inner membrane just percepta- 

 ble, the apex of this structure adheres strongly to the 

 inside of opercle. 



