278 BOTANICAL GAZETTE [APRIL 
improbable that the Mediterranean hides a third species of Cutleria. 
Therefore A. chi/osa multiplies always non-sexually, without alternation 
of generation, as is also the fact with A. parvula in northern Europe. 
If it possesses a gametophyte it is without doubt some exotic species 
(C. compressa, C. pactfica) as yet insufficiently studied. 
As for the culture of oospheres of Cutleria, it has given up to the 
present very conflicting results. Thus in the middle of the century 
Thuret obtained through the germination of parthenogenetic oospheres 
some small plants somewhat resembling an Ectocarpus, which no one 
has since found, and which I call form Zhuretiana of germination. 
But Falkenberg has obtained from the germination of fertilized 
oospheres (the only ones that did germinate in his cultures) some 
strange plants, at first with the form of a small upright column, at the 
base of which is borne, after it has arisen, a creeping plate comparable 
to Aglaozonia; these plants I call form Falkenbergiana. There is 
also a form Falkenbergiana that has been obtained by Church, but 
from the germination of parthenogenetic oospheres, in this respect 
differing from the results of Thuret and Falkenberg. Finally the 
zoospores of 4. parvu/a have given to Church plants which, like the 
preceding, have the creeping plate-like thallus of Aglaozonia, but 
whose column ends at the summit in filaments (not fascicled) which 
bear the reproductive organs of Cutleria. I have named this new 
example of germination form Churchiana. Some plants comparable 
to these have developed in the cultures of Kuckuck. 
How shall such divergent results be reconciled? It may always be 
borne in mind that the preceding authors have never obtained uni- 
formity of germination in their cultures. 
Now I have found C. adspersa at Guéthary (Basses - Pyrénées) when 
the male plants were more numerous than the female. The discharge 
of the sexual elements was abundant, and took place readily in my 
cultures. However, I have never obtained fertilization ; the oospheres 
did not even attract the antherozoids: At times they germinated very = 
readily parthenogenetically and gave always and characteristically the 
form Falkenbergiana. This is in agreement with the observations of 
Church, but my results are the more surprising, for the English author 
found only a few or no male plants; his female plants were therefore 
unfortunately parthenogenetic. 
It occurred to me to look for germination of spores in nature upon 
the Cutleria plants themselves. I have found a great many of the 
