CALYCULARIA RADICULOSA CAMPBELL 



59 



Fig. 12. A, apical region of the sporogonium of Calycularia radiculosa, showing 

 the thickenings on the cell walls, x 90. B, lateral wall of the same sporogonium. 

 C, ripe spores and elaters, x about 200. D, very much attenuated elaters, x 350. 

 E, typical elaters, x 350. F, ripe spore, x 350. G, section of spore. H, lower part 

 of seta and foot, f, x 90. /, apex of sporogonium of Pallavicinia (Blyttia) radi- 

 culosa, X 90. /, lateral wall of the same, x 90. K, section of ripe spore, x 350. 

 L, markings on the surface of spore, x 750. 



