246 Transactions British Mycological Society. 
planting operations. Three gatherings were made in Johore, 
two being on much decayed logs and stumps of Kumpas 
(Koompassia malaecensis Maingay). One of these logs was 
almost covered with an immense colony of Cribraria intricata. 
The third gathering of Erionema, a very large one, was on the 
upper surface of a large polypore. When I found this I had no 
box to place it in, so I carefully moved it, anticipating picking 
it up later; when two days later I returned, there had been 
several violent rain storms and little trace of the Erionema was 
left on the fungus. A rich chrome yellow plasmodium which 
was issuing from the cut end of a very old hard-wood stump 
developed ten days later into small colonies of this species. The 
bright colour does not agree with the “colourless or pale yellow” 
plasmodium described in Lister’s monograph. 
Trichamphora pezizoides Jungh. This is one of the common 
species found on Hevea logs both in Ceylon and in Malaya. It 
occurs also on other wood, especially on felled timber which has 
been stacked for some time. Colonies of large size are frequent. 
Early in December 1920 I found this species on an old Hevea 
log which I had kept under observation for some months, and 
from which I had collected the mature sporangia a fortnight 
before. The log, which was lying on the edge of the jungle, was 
almost covered with a remarkable development of the dirty grey 
plasmodium. In many places the fine network of veins had 
given place to a complete sheet, and the main veins were in 
places half-an-inch in diameter. Altogether, the plasmodium, 
which had spread over various adjacent species of the higher 
fungi, including Daldinea sp., Tvemellina sp., Ustulina zonata 
and Schizophyllum commune, must have covered many square 
feet. When crawling on the fungi the plasmodium was appa- 
rently much more watery and lighter in colour*. : 
Physarella oblonga Morgan. So far as my experience goes this 
is one of, if not the commonest species in tropical Malaya, more 
especially in the lowlands below 500 ft. One can be almost 
certain of a gathering at any time of the year by examining a 
few decaying logs of Hevea brasiliensis. Very large colonies of 
typical sporangia are frequent, and occasionally confluent forms 
occur. The plasmodium resembles that of Badhamia utricularis 
in colour and usually leaves very definite tracings of brown 
residual matter. When the sporangia dehisce the beautiful rich 
yellow columella is a marked feature and readily distinguishes it. 
For some reason the various insects which quickly destroy many 
species leave this one severely alone. 
* Theappearance of the plasmodium of Physarumvivide var.rigidumchangesin 
a similar manner when developing on some species of fungi, and the plasmodium of 
Badhamia utriculavis reacts similarly when cultivated on the common mushroom, 
