REPRODUCTION OF THE ASCOMYCETES. 
40 
In Poronia punctata a greater number of joints are prolific, but 
tlie sterigniates of the conidia are almost null ; in some other 
Hypoxylons, H.fascum, the prolific joints are freely branched. 
If we pass to the Hypomyces^ we shall encounter, besides the 
endospores, two forms of spores, equally free and borne upon 
arbuscles ; one form, with thick membrane, coloured and double, 
evidently representing the stylospores ; they are more or less 
allied to those of Melanconis, of Massaria, and of Cucarhitaria ; 
the other form, pale and with a slight membrane, representing the 
sperniatia. 
The fact common to these species, which all live at the expense 
of other fungi, is that of presenting, besides the ascophorous con- 
ceptacles, two orders of spores perfectly homologous, and the 
complete parallelism of which ought not to be doubted for a 
moment. These curious parasites, of which M. Tulasne has given 
some magnificent drawings, will exhibit to us the possible varia- 
tion in each of the two forms. 
The Hypomyces aurantius possesses some conidiferous arbus- 
cles, the sterigmates of which are very much elongated and form 
lateral branches. The existence of two other modes of reproduc- 
tion does not allow of any doubt that the third does not corre- 
spond to the spermatia ; one proves besides an analogy of form with 
the typical form described above. 
At the extremity of the branches is borne an oval acrogenous 
spore, which becomes detached and falls. It may be adherent 
when the formation of a second spore, likewise borne at the ex- 
tremity of the filament, and which raises it by degrees and becomes 
isolated from it, commences beneath it. The outermost spore will 
thus be the oldest. 
There is a complete analogy with what happens in Penicillium, 
and the conidia in a chaplet of the allied genera of the Hypomyces 
(ex Melanospora, Torrubia) furnish some similar examples. There 
are besides, in Torruhia and Hypocrea, the identical representatives 
of the spermatiferous arbuscles, the chlamydean spores appearing 
to be often missing. In Hypomyces aurantius, as in H. ochraceus, 
Pers., the conidia are at times bilocular, although often simple ; in 
H. chrysospermiis they are more often bilocular ; in H. rosellus, 
Tuh, they are plurilocular. 
It is pretty certain that in all these different cases we have 
always something to do with homologous forms, which ought to be 
considered as morphologically identical. 
The Hypomyces possess accordingly a conidiferous apparatus 
representing the spermogones of the other Ascomycetes, which 
establishes and shows the transition between the typical form and 
other forms, at first appearing perfectly different. It is thus that 
the chaplets — spores produced in Penicillium glaucum — find their 
analogies ; this resemblance is supported by the recent researches 
of M. Brefeld, who has obtained and described the conceptacles of 
this species, conceptacles with cellular partitions having, in my 
