192 Transactions British Mycological Society. 
possible to examine this type specimen, which is in Hungary, 
the description, meagre as it is, fits in well with the fungus now 
under consideration ; these fungi are therefore probably identical. 
It is thought advisable, however, to amplify Hollés’ description, 
and the fungus will be named Diflodina Lycopersict (Cooke) 
Hollés emend. Brooks and Searle*. 
Diplodina Lycopersici (Cooke) Holl6és emend. Brooks and Searle. 
Pycnidia scattered to aggregate, subcutaneous but subse- 
quently erumpent, glabrous, brown to brownish-black, sub- 
globose, slightly papillate, ostiolate (usually one sometimes 2-3 
pores), 100-270 in diameter; pycnospores issuing in coils 
through the ostiolum, forming a dirty white to flesh-coloured 
exudate; hyaline; continuous to I-septate (the percentage of 
septate spores is very variable), slightly constricted at the 
septum, 2-guttulate, or devoid of guttules, 4°5-17 4 Xx 2-5-5 
(average 9:4 < 4), sub-cylindrical, produced singly as un- 
branched conidiophores. No definite stroma; no perithecial 
stage observed. Parasitic on green and ripe fruits of tomatoes, 
causing a soft rot, also on the stems, especially just above 
soil level. 
It is considered that the fungus, isolated both from tomato 
stems and tomato fruits, which was the subject of investigation 
by one of us(z) some years ago was identical with this. It was 
then shown that the so-called tomato “‘canker’’ fungus was 
capable of causing a rot of the fruit, and that the same fungus 
isolated from rotting fruits was able to induce a “canker” of 
the stemf. j 
Series 3. 
Pycnidial form accompanied by Alternaria spores on the 
same mycelium. 
Form C. 
It is proposed to name the fungus obtained from tomato 
fruits Phoma alternariaceum Brooks and Searle. 
Phoma alternariaceum Brooks and Searle. 
Pycnidia aggregate, glabrous, brown to black, subglobose, 
slightly papillate, ostiolate (usually one, sometimes two pores), 
* Since this paper was written, a description of tomato “‘ canker” as it occurs 
in Germany has appeared (Klebahn, N., ‘‘ Der Pilz der Tomatenstengelkrankheit 
und seine Schlauchfruchtsform,’’ Zeitschrift fiir Pflanzenkrankheiten, xxx1, 
1921, p. 1). Klebahn also refers the fungus to Diplodina Lycopersici Hollés. 
He has, moreover, found the perithecial stage, which he names Didymella 
Lycopersici. . 
¢ During the summer of 1921, the stem canker form of this disease was 
received both from this country (through Mr A. D. Cotton) and from Holland 
(through Dr C. Schoevers). In each the fungus was identical with Diplodina 
Lycopersici (Cooke) Hollds. 
