Rev. M. J. Berkeley on British Fungi. 365 
large nuclei in the upper cell, and sometimes one in the 
lower cell*. 
Tas. XI. fig. 6. a, spores from fresh plants; 5, ditto from dry plants. 
Both highly magnified. 
204. A. Brassice, Chev., Fl. Par. 1. p. 449. On decayed 
cabbage leaves. Common. This has quite the habit of a 
Depazea. There are no fibres, but they do not seem to con- 
stitute by themselves the essential character of the genus. 
Dothidea Alchemille has fibres sometimes, though the con- 
trary is stated in the ‘ English Flora,’ and it is then externally 
an Asteroma, but it has true asci; and the perithecia, as in 
Dothidea Chetomium, are beset with short bristles, which are 
however to be seen only on very close examination. 
205. Leptostroma vulgare, Fr. Syst. Myc. vol. i. p. 599. 
On dead stems of Artemisia. Berwick. Dr. Johnston. 
206. Diplodia Ilicicola, Desm.! exs. n. 988. On small 
branches of holly. Milton, Norths. The true distinction be- 
tween this genus and that of Spheria is, that the fructifying 
bodies are not asci containing sporidia, but spores produced 
on sporophores, exactly as in the analogous genus Melanco- 
nium, which differs principally in having no perithecium. 
_ Tas. XI. fig. 7. a, young spores; 6, perfect spores on their sporophores. 
Both highly magnified. 
207. D. Viticola, Desm.! exs. n. 989. On vine branches. 
King’s Cliffe. I have also found a Diplodia on branches of 
raspberry. Stilbospora biloculata, Johnst.! belongs to this 
genus. ‘The species at present have not been sufficiently 
studied, and it will probably be found that many are forms of 
Spheria mutila. In an early stage-of growth the perithecia 
are filled with a delicate white cellular tissue, when they re- 
semble smal] Sclerotia. This gradually vanishes in the centre, 
and the portion towards the circumference becomes fertile. 
This is also the case with certain species of Spheria, which 
will hereafter probably constitute a new genus. Amongst 
them is the curious S. pheocomes, which I have found in fruc- 
tification, and of which I have given a figure. Tab. XI. fig. 8. 
* IT have used the term nuclei to include oil drops or real granules, as it 
is not always certain what is the nature of the bodies commonly called spo- 
ridiola. ‘They certainly have some important influence on the vegetation, 
like the cytoblasts of higher plants. I have seen a sporidium of Spheria 
biformis germinating while yet in the perithecium, and opposite to every 
nucleus a distinct filament was given off. See Tab. XI. fig. 8. 6. 
[To be continued. } 
