A ks ‘le n "4 , ur a 
Ke 
\ > vay éf 
Spe - 4 Tf f ‘ ss i a OE nee 
* _ ° 4 
7 
Special Morphology and Classification. 307. 
"3. Stegocarpi or Bryacee. [The theca is covered by a calyptra, and 
opens by throwing off an operculum. | , 
Fic. 434.—Hypnum flicinum (Pleurocarpi ; 
natural size). 
oe > > \ 
SW 
die 
Fic. 433.—Bryum argenteum (Acro- 
carpi); I. the whole plant (magni- 
fied); II. theca with operculum; 
III. theca burst, showing the peri- Fic. 435.— Hypnum populeum (Pleuro- 
stome (more strongly magnified). carpi ; magnified). 
xX 2 
