366 BOTANICAL GAZETTE | NOVEMBER 
segments (fig. 79). Branches arise from these segments in 
profusion and secondary branches from the first, so that ulti- 
mately there results an oval body consisting of roundish cells, 
closely packed together, and yet really constituting a system 
of filaments. As the lobe matures the connections between the 
cells are severed and finally they separate as carpospores, quite 
distinct from one another. /%g. 20 shows a section through a 
maturing cystocarp. Here there are three lobes shown in section 
and the attachment of two of them to the second cell of the 
cystocarp (1?) is evident. The largest lobe was made up of ripe 
spores which were about ready to escape from the cystocarp; 
the other lobes were much younger. The remains of the procarp 
(2) with the base of the trichogyne may be seen on the right of 
the figure. 
As the cystocarp develops it frequently happens that the 
strands of protoplasm between the terminal cell of the procarpic 
branch and the carpogenous cell and between this last and the 
first cell of the cystocarp become much wider than they were 
originally. There is evidently an absorption of the cell-wall 
between these cells. In fig. 20 the cell-wall between the ter- 
minal segment of the procarpic branch (no. 10) and the car- 
pogenous cell (c) has been so far absorbed that were it not 
for the fact of a nucleus being present in the carpogenous 
cell, and its position in reference to the procarp and cya 
carp, one would be likely to consider it a part of the terminal 
segment. 
PTILOTA PLUMOSA C, AG. AND P. PLUMOSA FILICINA FARL. 
The material upon which this examination is based aod 
collected by the author in the month of July 1892 at Pacific 
Grove, California. In the following account of the structure 
and development of the procarps and cystocarps of this species 
and its variety we take it for granted that the reader is familiar 
with the main points of the account of Prilota serrata. Accord- 
ingly the subject is considered under the same divisions and 1M 
the same order as those of the preceding description, and the 
