FUNARIA HYGROMETRICA (l.) SCHREB. 
397 
The first antheridial inflorescences observed are borne on the summits of 
unbranched axes (fig. 15), or on the summits of the primary axes (fig. 13) 
in case the gametophore is branched. As the cultures grew older, examina- 
tion showed that this location of the male sex organs is by no means the 
universal one. It is quite common to note antheridia on the apex of an 
innovation (fig. 12), either archegonia or antheridia being borne on the 
primary axis. Gametophores with innovations bearing antheridia were 
noted in twenty-two cultures out of one hundred examined with the object 
of determining the situation of the antheridia. In each of these cultures 
from one to ten such gametophores were observed. 
From these results it appears that in the majority of instances the an- 
theridia are borne on the apex of the primary axis (figs. 11, 13), or on the 
apex of the independent, unbranched gametophore (fig. 15); less often are 
they borne on the innovation, the main axis in such a case bearing either 
archegonia or antheridia. 
The appearance of archegonia was not noted in any of the cultures 
within less than four weeks after the appearance of antheridia in the same 
cultures. The archegonial heads are so similar to the sterile heads that 
dissection is often necessary in order to distinguish them (figs. 11, 13). 
The antheridial heads are easily distinguished by their discoid shape from 
the archegonial or sterile heads. From one to five archegonia are formed in 
a group; three, however, is the most common number observed. 
Culture 26 is typical of the sequence of events in the series of cultures 
from 18 to 204, so far as regards the production of archegonia. The history 
of this culture has already been given to the time of the appearance of 
antheridia on April 3, 191 7. Archegonia were observed about seven weeks 
later, on May 30, 191 7. In culture 91, antheridia were noted April 26, 
and archegonia approximately four weeks later, on May 25, the spore 
having been sown only a week earlier than that from which culture 26 arose. 
The spore from which culture 20 grew was sown on December i, 1916, the 
protonema was transferred December 16, antheridia were observed April 
26, 1917, and archegonia not until September 27, 1917. The sequence of 
events in the majority of the cultures is similar to that in cultures 26 and 91. 
In regard to the position of the archegonia, it was found that in the 
greater number of cases examined, the archegonia are borne on the innova- 
tions, the main axis bearing antheridia (figs. 11, 13) or in some instances 
archegonia. Unbranched axes bearing archegonia were also observed 
(fig. 14) ; such axes are more common when the cultures are young. 
Considering the results thus far described, it is plain that so far as the 
material I have worked with is concerned, the gametophytes of F. hygro- 
metrica are always potentially bisex'ukl. 
All previous writers who have discussed the distribution of the sex 
organs in F. hygrometrica seem to agree that the organs of opposite sex are 
separated in individual inflorescences. I have been able to find no mention 
of synoicous inflorescences in this species. The examination of my cultures 
