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mycelium of the cultures was aerial, white, flocculent, septate, 
with numerous crystals, and, in arising from a sclerotium, it 
‘« flowed,’’ as it were, in aggregated and twisted strings which 
originated at definite points. 
In sclerotial-formation, masses of hyphae stand erect from the 
substratum of mycelium. ‘They are dumb-bell-shaped in the 
earliest stages. Gradually, the free end of the mass rounds itself 
off, becomes more compact, and changes colour from an intense 
white to a pale brown. When it is fully mature, the sclerotium 
is easily detached. ‘The point of attachment is often marked by 
a dimple, and it may be darker in colour than the body of the 
sclerotium. During growth the sclerotia are covered with 
droplets of moisture. Occasionally the hyphal mass will form a 
twin sclerotium which is then dumb-bell-shaped. The core of a 
space of three months. Similarly, sclerotia placed in sterilised 
soil moistened with sterile distilled water gave rise to mycelia 
which were comparatively weak in amount, but strong enough in 
growth to attach themselves to small stones. Growth, however, 
ceased altogether in twenty days. Young pale-brown sclerotia 
could not be induced to push out mycelial strands. No conidial 
stage was found in any of the cultures. 
A few infection experiments were conducted with Sclerotium 
i ced in prune decoction, showed no 
Sages at all. The effect of Fungal, tested by immersing sclerotia 
or twelve hours in open jars of soil*containing the fungicide, was 
omelat, Soe Sh a peohm of growth. 
» _4aiS Tecord of Sclerotium Rolfsii is the only one for Uganda, 
| and no allied form has yet been found on any other plant. a 
a eee 
