Wart Disease of the Potato. M. C. Potter. 249 
A plan has been set on foot to extend this line of enquiry 
during the coming year, repeating these experiments and ex- 
tending them to other varieties of potatoes. 
The problem of increasing the acidity of the soil has also been 
attacked and it is hoped to conduct experiments upon the re- 
lationship of soil acidity to wart disease. 
REFERENCES. 
Atkins, W. R. G.—Notes from the Botanical School of Trinity College, Dublin, 
III, p. 133 (1922). 
Jamieson, T. F.—Reports of the Agricultural Research Association. Aberdeen 
(1892). 
Potts, G.—Report of the British Association, South Africa, p. 596 (1905). 
RECORDS OF FUNGI IMPERFECTI. 
With 4 Text-figures. 
By Jessie S. Bayliss Elliott, D.Sc. and Olive P. Stansfield, M.Sc. 
During 1920 and 1921, in the course of collecting material for 
another investigation, we have met with the following fungi, of 
which Septocylindrium leucum, S. melleum, Patellina caesia, 
P. diaphana are new species; Lemalis aurea, Hadrotrichum 
virescens var. Poae, Penicillium silvaticum are new records for 
the British Isles, and Oospora ochracea, Tetraploa aristata and 
Sporodesmium myrianum seem worthy of note. 
SEPTOCYLINDRIUM LEUCUM n.sp.*f 
The mycelium forms gregarious superficial white brittle tufts 
on the surface of pine cones. The hyphae are very short so that 
the entire tuft is a mass of conidia. These are produced basi- 
petally in repeatedly branched chains and are cylindrical in 
shape with truncate ends; they measure I0-I5 x I-5—2p, are 
from one to three septate and are produced in great quantities. 
They are rough, being covered with minute granules which soon 
disappear in water. The conidia germinate easily in rain water 
in the course of 24 hours. 
This fungus agrees in many details with Septocylindrium 
album (Preuss) Sacc., recorded (without size of spores) by 
Preuss (in Sturm, Deutsch. Fl. 111, 29 and 30 (1851), pp. 73, t- 37) 
as growing on decaying stumps of wood near Hoyerswerda in 
Germany, but it is evidently not the same fungus for the 
conidia are described and figured as definitely spindle-shaped, 
* Septocylindrium leucum n.sp. 
Hyphis conidiophoris brevissimis, in fasciculos gregarios, superficiales, albos, 
fragilissimos digestis. Conidiis copiosis, cylindricis, truncatis, 1-3 septatis, 
IO-I5 x I-5—2mu catenas repetite ramosas efformantibus. 
Hab. in conis Pini sylvestvis herba semisepultis toto anno, Tanworth-in- 
Arden. 
+ Found also on pine cones sent by Dr C. E. Fairman from Lyndonville, N.Y. 
