202 
Ridler . — The Fungus present in 
store. On the capsule-wall, on the calyptra, as well as on the involucre, 
small pycnidia are produced containing numerous conidia (Fig. 7). 
The pycnidia are from 80-120 /x in diameter, smooth, globose, and 
open at the apex by a pore. They are completely or, more frequently, 
partially embedded in the tissue of the plant. The conidia are hyaline, one- 
celled, cylindrical in shape, 5-6 \x long and 2 n wide. 
Fig. 7. Longitudinal section through part of the capsule of an infected sporogonium, showing 
hyphae inside the young gametophytes, and a pycnidium produced on the wall. X 333. /z., hyphae ; 
pc pycnidium; sp., conidia. 
Certain sections showed that the fungus had penetrated to the foot and 
seta, but had not yet entered the capsule, the spores of which were still 
green and uninjured. In other sections through the sporophyte it was 
seen that though there was a considerable number of fungal hyphae in the 
seta and capsule, and around the foot, there was none in the gametophyte 
thallus in the neighbourhood of the sporogonium. The capsules in such 
cases had not fully developed ; the capsule-walls were not fully differentiated, 
