SCAPANIA:— 



121 



Pi 



mi 





Fig. 243. Scapania pahidicola; part of spore surface 

 (X 1000); LO-patterns. 



SCHISTOSTEGA: 



X 4000 -^.isss* 



Fig. 244. Scliistostega osmnndacea; 

 LO-patterns and live spores ( x 

 1000; from left to right: optical 

 section, distal face of three spores, 

 and spore in lateral view); the 

 upper detail figure exhibiting the 

 exine stratification is enlarged 

 about 4000 times. 



SOUTHBYA:— 





Fig. 245. Soiithbya stillicidioniin; a, cf. distal 

 face; b, cf. proximal face (x 1000). 



SPHAGNUM:— 



Fig 



24(). A, Spluif/niini fiiiihrialiim; deviating ("tetrachotomolnesurate" or 

 "4-lete") spore (> lOOO). H, S. p(duslrc; proximal face of normal (3-lete) 

 spore (x 1000); a, with perine (surface); h, with perine (optical section); 



c, without perine (surface). 



