204 FUNGI. 
the peridia of Restelia appeared, and were developed. “ This 
trial of spores,” says Cirsted, “has conduced to the result ex- 
pected, and proves that the teleutospores of Gymnosporangium, 
when transported upon the sorb, give rise to a totally different 
fungus, the Restelia cornuta, that is to say, that an altcruate 
generation comes between these fungi. They appertain in con- 
sequence to a single specics, and the Gymnosporangium ceased to 
be an independent species, and must be considered as synony- 
mous with the first generation of Restelia. The spores have 
been transported upon young shoots of the juniper-tree, and 
have now commenced to produce some mycelium in the bark. 
There is. no doubt that in next spring it will result in Gymno- 
sporangium.” 
Subsequently the same learned professor instituted similar 
experiments upon other hosts, with the spores of Podisoma, and 
from thence he concluded that Restelia and Podisoma, in all 
their known species, were but forms the one of the other. 
Hitherto we are not aware that these results have been con- 
firmed, or that the sowing of the spores of Rastelia on juniper 
resulted in Podisoma. Such experiments should be received 
always with care, and not too hastily accepted in their apparent 
results as proven facts. Who shall say that Iws¢telia would not 
have appeared on Sorbus within two months without the sowing 
of Podisoma spores?—because it is not by any means uncommon 
for that fungus to appear upon that plant. It is true many 
mycologists write and speak of Restelia and Podisoma (or 
Gymnosporangium) as identical; but, as we think, without the 
evidence being so complete as to be beyond suspicion. It is, 
nevertheless, a curious fact that in Europe the number of species 
of Restelia and Podisoma are equal, if one species be excluded, 
which is certainly not a good Podisoma, for the reception of 
which a new genus has been proposed.* 
Amongst the ascigerous fungi will be found a curious but into- 
resting genus formerly « called Cordyceps, but for which Tulasne, 
in consequence of the discovery of secondary forms of fruit, 
* This is Podisoma fuliicola, B. and Br., oy, as propgsed in ** Journ, Quekett 
Clah,” ii. p. 267, Sarcostroma Berkeley?, C. ; 
