198 
Rid lev . — The Fungtis present in 
are always terminal and possess very thick walls and granular contents, 
and measure 21-28 \x in diameter. They apparently correspond to the 
vesicles described by Cavers in Monoclea Forsteri , and by Beauverie in 
Fegatella conica. Beauverie regarded them as chlamydospores. This, in 
all probability, is their nature, as they occur in very large quantities in the 
old parts of the thallus — that is, in the portions which die off. As decom- 
position of these old portions of thallus proceeds, the spores may possibly 
enter the soil and germinate. In the 
portion, showing hypha from a rhizoid 
branching, ramifying through the thallus, 
and bearing storage organs and chlamydo- 
spore. x 125. st., storage organ; ch., 
chlamydospore. 
plant, however, they have only been 
Fig. 2. Longitudinal section through 
the thallus, showing an almost mature antheri- 
dium with fungal hyphae around it. x 125. 
h ., hyphae. 
observed in connexion with the mycelium, and in various attempts which 
have been made to isolate the fungus from the thallus they did not 
germinate. 
The hyphae in the rhizoids vary to some extent in appearance. They 
may be very narrow, with thin walls, and constricted at short intervals, or 
they may be very narrow and thin-walled, but not constricted. These 
forms occur in the younger rhizoids. I11 older rhizoids the hyphae are 
much wider, with granular contents and thick walls which are often brown 
in colour (Fig. 1). This is the normal condition for hyphae in the tissue of 
