88 
THE ORGANIZATION OF CCENOGONIUM AND 
of a plant which should no longer, because of this union, take its 
legitimate place amongst the series of classes of vegetation. 
By the side of this normal structure there are occasionally found 
imperfect individuals, amongst which the slender enveloping fila- 
ments are wanting, as in C . confervoides , Nyl., and others. In this 
case the plants are necessarily sterile, without apothecia, for these 
are formed, according to the researches of Professor Schwendener 
(“ Flor. Ratisb.,” 1862, tab. 1), exclusively by the concourse of 
the hyphal filaments. This difference, meanwhile, is not every- 
where absolute, for the new Ccenogonium pannosum (which I have 
just published in the “ Flora de Ratisb. ” of this year, Lichenol. 
Beitr., No. 309), sent from Brazil by M. Puiggari, presents the 
two conditions at the same time. Certain filaments show only the 
large green tube — thegonidia; and others from the same bed 
(gazon), covered with apothecia, are surrounded with a small 
number of slender hyphal filaments. 
But this last-named kind are precisely the filaments which have 
shown me, when I have analysed the species mentioned for its 
specific character, a remarkably demonstrative case, which forms 
the object of this note, and which confirms the beautiful general 
results recently published in the splendid work of Dr. Minks. 
This filament, in a great part of its length, measures Sp in 
diameter, and is composed only of a large green tube. It was con- 
formed to the large green tube of other filaments of the same bed, 
of which the greater number were loosely covered by, or encased 
with, a small number of the slender hyphal filaments. It contained 
then the cylindrical green gonidia, which simulated some articu- 
lations of conferva, and was the alga of the theory. But at a cer- 
tain point this large gonidia-bearing tube suddenly narrowed, 
under the form of a cone a little longer than broad, and after- 
wards continued under the form of a very slender capillary tube, 
only 2p in size, without there being any discontinuation of the 
cavity between the large tube and the very slender portion. The 
whole was formed of one single cell, at first large, afterwards very 
narrow, being comparatively hyaline, and moreover perfectly con- 
formable to the slender hyphal tubes of the theoretic fungus, 
which covered the large green tubes, or theoretic alga, in other fila- 
ments of the same species. Besides, the narrow part, examined by the 
aid of some powerful immersion objectives, and the light condenser 
of Professor Abbe, showed clearly the microgonidia. the gonidia in 
their preliminary state, under their form, size, and normal arrange- 
ments, and in this respect there was a conformity between the nar- 
row part and the hyphal enveloping tubes of the encased filaments. 
It follows that one and the same cell — in the one case enlarged 
and bearing gonidia — should have been the theoretic alga, while 
in the other case, it remaining narrow and containing the mi- 
crogonidia, it should have been the theoretic fungus, thus 
proving in the most absolute manner the falsity of the theory 
that one and the same cell may at the same time pertain to 
two classes of vegetation. There is neither Fungus nor Alga; 
