ee 
551 
by a transverse wall and afterwards by two longitudinal walls (fig. 536 E, F). The 
ripe sporangia are colourless; they contain a dense mass of protoplasm and numer- 
ous very small starch-grains. Chromatophores could not be detected, but colourless 
plastids are probably present. Young nemathecia with cells in the resting stage were 
met with in February, but as early as March four-parted sporangia were found, 
though most of them were still undivided, and in April and in particular in May 
numerous ripe sporangia were observed. Sporangia were rarely met with in June 
and never after that month. The ripe sporangia are 9—19 w long, 8—11 w broad, 
most frequently 14—15 w long, 8,5—10 w 
broad. — Single long sterile cells may occur 
between the sporangia; they are most easily 
observed in partly emptied nemathecia. 
The sexual plants differ from the 
sporangia-bearing ones by having no swollen 
globular ends. They are often much branched 
at the tips, but these branches have only 
the character of small warts (fig. 530 C). 
In sections of such irregular tips of the 
frond procarps may be found, often several —— HW 
ae A SR en of procarps were m Wy sn) 
observed in several plants, but only incom- So Ba 
pletely developed. The fertile character of these 0 lø 4° 
groups of cells is disclosed by their size and RER ©; 
their abundance in plasmatic contents. When 
treated with hæmatoxylin after HEIDENHAIN 
they remained nearly black even after diffe- Fig. 537. 
tiati FOR 1 2 that tl tr Ceratocolax Hartzii. Procarps, two with protruding 
rentiation tor a long time, so a ne struc- trichogynes. August. 625 : 1. 
ture of the cells, in particular the presence 
of nuclei, could not be distinguished. Only in a specimen gathered in November 
and treated with formalin-alcohol it was observed that most of the cells of the 
procarps contained several small nuclei (fig. 539). The best developed procarps were 
found in specimens gathered near Samso in August. Fig. 537 C shows such a pro- 
carp with long, protruding trichogyne; the carpogonial branch is here three-celled 
and borne on a large cell which is probably an auxiliary cell, much as in Phyllo- 
phora Brodiei. Spermatia adhering to the trichogyne like those observed by Darsi- 
SHIRE, I have never observed. The other procarps from the same plant (fig. 537 A-B) 
can probably be interpreted in a similar manner, a trichogyne, however, being 
only developed in fig. A. In both procarps a lateral cell is borne on the first cell 
of the carpogonial branch. Feebly developed trichogynes are shown in fig. 538 but 
at any rate in some of the procarps here represented a three-celled carpogonial 
branch cannot be pointed out, and the procarps shown in fig. 538 C, too, can 
scarcely be reconciled with the type of a three-celled carpogonial branch. If the 
