18 Prof. F. Schmitz on the ‘ 
cell from the emptied ooblastema-cell and shoots forth late- 
rally (fig. 13). This outgrowth, however, becomes separated 
off as an independent cell (fig. 14), and then, as the central 
cell, gives origin to a single spore-complex (fig. 15). 
Thus, in the first case, the individual joint-cell of the 
ooblastema-thread (after prelimimary conjugation with an 
auxiliary cell) produces a lateral branch-cell which leads to 
spore-formation, just as in the Gelidiez, previously described, 
only that here this cell does not give origin to a single spore, 
but (just in consequence of the conjugation with an auxiliary 
cell) to a whole complex of spores, which appears to be indi- 
vidualized as a single fruit or cystocarp. Here the ooblas- 
tema-cell is evidently strengthened by the conjugation with 
the auxiliary cell, and rendered capable of the production of 
more numerous spore-mother-cells (Polyides, Dudresnaya). 
In the latter case, however, this calling in aid of the auxiliary 
cell passes into a complete amalgamation and union of the 
ooblastema-cell with the auxiliary cell, after which the re- 
sulting conjugation-cell becomes further developed in the same 
way as the ooblastema-cell assisted by the auxiliary cell in 
the former case, 
Thus, in both cases, either a lateral offshoot becomes sepa- 
rated off as an individual cell and then commences a very 
rapid growth, or, more rarely, this rapid new growth proceeds 
from the conjugation-cell representing the ooblastema-cell. 
More or less numerous marginal cells are separated off from 
this outgrowing cell as the central cell of the cystocarp, and 
grow into short-jointed abundantly-branched cell-filaments. 
By this means is produced a more or less highly-developed 
tuft of filaments, the filaments of which either remain indivi- 
dually free (Peyssonelia, Cruoriopsis*), or are held together 
* With regard to Cruortopsis 1 have formerly stated (Sitzungsb. d. 
niederrh. Gesellsch. ftir Natur- und Heilkunde zu Bonn, 1879, p. 877) 
that after the conjugation of the “ fertilization-tube” of a “ procarp” 
without a trichogyne, the other cells of the latter become directly con- 
verted into spores. I must now correct this statement in this respect, 
that after the conjugation of the ooblastema-cell with an auxiliary cell 
(the above-mentioned cell of the trichogyneless “ procarp”’), the former 
cell sprouts as the central cell of the cystocarp, and gives origin to one or 
two short lateral branches of from one to three cells. These lateral 
branches take a direction parallel to the erect thallus-filament, so that of 
two lateral branches, the one regularly grows upwards and the other 
downwards. Both together then precisely present the aspect of a tri- 
chogyneless “procarp,’ with the middle ceil of which the “ fertiliza- 
tion-tube” has conjugated, just as I formerly interpreted the observed 
facts. After I had found the key to the processes in the fructification of 
the Florideze by the comparative investigation of numerous individual 
forms, it became comparatively easy to fathom and establish as above the 
development of Cruortopsis, the complete elucidation of which in detail, 
for a time, presented many difficulties. 
