192 
wall going from the middle of the longitudinal to the border of the basal wall of 
the mother-cell. Two young stages are shown in fig. 113 A,B. The carpogonium 
shown in fig, 113 C is a little more developed, though yet unfertilized; the tricho- 
gyne is short and thick, the carpogonium encloses completely the right side of the 
hypogynous cell. The carpogonium represented in fig. 113 D has the appearance 
of being fertilized, the continuity of the trichogyne with the ventral part being 
interrupted, but the carpogonium has not reached the surface of 
the frond, and no spermatia adhere to it, nor have any sporogenous 
filaments been formed. Later stages of the carpogonia I have not 
observed. 
( The auxiliary cells are more numerous than the carpogonia; 
l they occur in particular branches given off at the base of ordinary 
) nemathecial filaments and are shorter than these (fig. 113 E—H). The 
@) 
cells of these filaments have a dense protoplasm and are somewhat 
swollen, particularly the two uppermost cells, while the third cell 
© from the top (more rarely the fourth) is not swollen. This latter 
cell is the auxiliary cell, which may be concluded from the fact 
that it is sometimes found in connection with thin sporogenous 
Fig. 114. 
Cruoriella codana. 
filaments running in a horizontal direction between the nemathecial 
filaments. Over the auxiliary-cell filament a space containing a 
hyaline substance and provided with a membrane open above is 
4A. vertical section 
of margin of frond. 
B, vertical section 
of sporangial nema- 
thecium. 350:1. 
visible; it resembles an abortive hair (fig. 113). The development 
of the cystocarps has not been followed, but a cystocarp, not quite 
ripe it is true, but apparently not far from ripeness, is shown in 
fig. 113 I. It consists of a few upward directed, slightly branched 
filaments, the cells of which each produce a carpospore. In the most developed 
cystocarp I have seen the carposporal cells were 11—12 „ in diameter. 
The sporangial nemathecia, of which I have only observed one, much resemble 
those of P. Nordstedtii (Mrs. Weber-van Bosse I. c. p. 142). The nemathecium had 
a height of 88 », the paraphyses were less tapering than those of the sexual nema- 
thecia, the upper cells being 4y broad; the undermost cells were usually 2—3 times 
as long as broad. The tetrasporangia, fixed at the base of the nemathecium, are 
certainly cruciately divided, but the ripe sporangia were disturbed by the preparation. 
Some were divided by a transverse or slightly oblique wall, but the direction of the 
following walls could not be stated (fig. 114). The almost ripe sporangia are about 
50: long, 18 » broad. 
As mentioned above, I at first referred the specimens here described to Cruori- 
ella armorica Crouan, and I maintained this determination also after having examined, 
through the kindness of Prof. NORDSTEDT, a type specimen of this species from CROUAN 
in J. AGARDH’s herbarium at Lund (Nr. 27630), having in one specimen found a still 
sterile nemathecium with thin upwardly tapering nemathecial filaments as in the 
sexual nemathecia of the Danish species. The sporangial nemathecia, which at that 
