163 
abundantly at Apethorpe on willow. It is a rare species, Fries 
had seen dried specimens only.” 
So Mr. Berkeley adds to our difficulties yet another species. 
This Daedalea confragosa is a common species in Shropshire 
occurring on decaying Rowan-trees, &c., and seems sufficiently 
distinct from the two we are now considering. 
[tis a peculiarity of this Trametes that it will not cast spores. _ 
We have failed to obtain any casting from at least a dozen 
specimens, and Mr. Carleton Rea, to whom specimens were sub- 
mitted, met with the same result. The few isolated spores that 
were met with appeared to be curved in shape, but it would 
not be safe to give any measurement from these. 

NOTES ON BRITISH CLAVARIAE. 
By A. D. Cotton, Pde Sepp. Herbarium, Royal Botanic 
Gardens, Kew. 
The following notes deal with the nomenclature of two species 
of Clavuria, yazan enaequalis, Miiller, and C. fistulosa, Holmsk. 
Before considering these it may however be mentioned that 
durmg the course of an investigation of this genus, special 
attention has been paid to the spore and its value as a diagnostic 
character. The result of such a study shows that many species 
are remarkably constant in the size and form of their spores, 
whilst others are characteristically variable. Further, that the 
fecognition of the type of spore of a given species will, in some 
cases, be found useless as a character to separate the plant from 
other species externally similar, whereas in other cases it will 
be found of great service for this purpose. 
Additional work is required, but it is clear that a more accurate 
nowledge of the spores of the Clavariae would be of value, 
especially to the systematist. 
CLAVARIA INAEQUALIS, Miiller (in Flora Danica). 
In the opinion of the writer C. dissipabilis, Britz. must be 
regarded as a synonym of C. inaegualts. 
Practically the only feature which has hitherto kept the two 
‘part is the character of the spores, those of the former were 
stated to be subglobose and provided with spines, and those of 
the latter elliptical and smooth. That C. imaequalis possesses 
smooth elliptical spores is a statement however which cannot be 
Supported by facts. There is no type specimen in existence, 
ut the ideas of older writers as to the plant are unmistakable. 
