362 Marshall Ward . — On a lily -disease, 
which directly infected it, and produced a mycelium which 
developed sclerotia, and again Botrytis. 
In 1886 Sorauer 1 published the result of his investigations 
on a disease of onions, caused by a Peziza . Here, again, he 
found that a Botrytis was developed as well as a sclero- 
tium, and that infections could be made with the Botrytis - 
spores. 
That Botrytis cinerea is only a conidial form of the sclero- 
tium-bearing Peziza Fuckeliana has long been established, as 
already said, and an excellent account of this fungus is to be 
found in De Bary’s book 2 . 
In 1886 De Bary published a remarkable paper 3 on ‘ Some 
Sclerotiniae and Sclerotium-diseases,’ in which the attempt is 
made to clear up much of the obscurity which hangs around 
this group of Pezizas. In this paper De Bary gives in detail 
the results of his study of Peziza Sclerotiorum , Libert 4 . 
He assumes a knowledge of the structure and development 
of the black sclerotia and the long-stalked funnel or trumpet- 
like hymenophores (the Peziza- form), giving some facts of 
importance for their identity 5 . The trumpet-like form is 
especially characteristic of the clay-coloured cups. The 
spores are discharged by ejaculation from the asci, and may 
thus be obtained very clean and in any quantity. Each spore 
is ellipsoid, measuring on the average about 11-12 \ u. long by 
4*5-6 y broad. De Bary expressly states that no gonidia- 
form of this fungus is known, and all his cultures were from 
the ascospores. 
The ascospore germinates at once in culture solutions, 
1 Handb. der Pflanzenkrankheiten, ii. p. 294. 
2 Comp. Morph, and Biol, of Fungi, etc., 1887, Engl, ed., especially pp. 219, 224, 
380. 
3 Bot. Zeit., 1886, Nos. 22-27. 
4 Sclerotinia Libertiana , Fuckel. This Peziza is named Hymenoscypha Sclero- 
tiorum , Lib. in Phillip’s British Discomycetes, 1887, and has received many other 
names. 
5 The best general account of the sclerotium is in De Bary’s Morph, and Biol, 
of Fungi, pp. 218, 219, etc., and inBrefeld’s Schimmelpilze, iv. p. 112 ; alsoPirotta, 
N. Giorn. Bot. Ital. xiii. p. 130. Other references are given in the first-mentioned 
book. 
