48 DR. NYLANDER QONIDIA AND THEIR DIFFERENT FORMS. 
him to detect Lichenine in the hjphas of Fungi before he could 
found a comparison of any value, and much less could he legiti- 
mately draw the conclusion which he too rashly and credulously 
accepts. 
2. Dr. Nylander, in litt. recently received, has informed me that 
M. Larbalestier has detected at Kylemore a beautiful saxicole 
species of Gongrosira, Kiitz., bearing the apothecia of a new 
Lecidea (Z. herbidula, Nyh). This algological genus is one which 
readily passes into Lichens. 
REPKODUCTION OF THE ASCOMYCETES. 
By Dr. Maxime Cornu, 
{Continued from p. 38.) 
Nectria cinnaharina — one of our most common species — pre- 
sents itself in great abundance upon dead branches, in the winter 
and spring, in gardens and hedges. The first form under which it 
shows itself constitutes the Tubercidaria vulgaris, Tode. If we 
make some skilful cuts of the Tubercidaria, we recognise that it is 
formed of a red stroma, from which arise a great number of fila- 
ments disposed as a fan, and bearing a considerable mass of spores. 
These filaments are divided, and each of their divisions bears a 
short sterigmate, which gives birth to a conidium : this coiiidium 
is exceedingly small, oval, and full of a dense plasma; the fila- 
ments have the constitution of the spermatiferous filaments ; 
the conidia the form and dimensions of the spermatia. One has to 
do with spermogonia with a free surface, as are, under a bed of 
bark, those of the Stictosphceria Hoffmanni, Tul., and not disposed 
in the form of a cavity. The filaments of the Tubercidaria give 
birth to an enormous number of small spores, like those of the 
ordinary spermogones ; they differ from the typical form by a 
greater elongation of the cells which constitute them, but their 
general disposition is absolutely the same. 
If we study Kylaria Hypoxyloii, so common upon old trunks 
in the woods, the fruitful stromas of which bear sometimes some 
ascophorous conceptacles, at others conidia, we should see that 
in the first case the stroma is of an intense black, and in the 
second of a glittering whiteness due to the conidiophore cells ; a 
transversal cut shows that it is formed of straight filaments, very 
small, divided, the terminal cell of which gives birth to a small 
conidium ; but the terminal cell is not the only one endowed with 
this property, that which is at the underneath part can also some- 
times emit one. Have we not here some veritable spermatiferous 
filaments very much resembling the better characterised arbuscles 
of the Pyrenomycetes and of the Lichens ? 
