1903] Thaxter,— Notes on Monoblepharis 103 
2. Notes on Monoblepharis. Ina paper published in 1895 
(Botanical Gazette, Vol. XX, p. 433 with plate) I gave a short account 
of certain species of this alga-like genus which were found grow- 
ing on submerged branches in pools near Cambridge and else- 
where; two new and striking forms being described as M. insig- 
nis and M. fasciculata respectively. The discovery of these plants 
was a matter of considerable interest at the time, for the reason that 
no members of the genus had been seen since the two original spe- 
cies on which it was founded (M. polymorpha and M. Sphaerica) were 
observed by Prof. Cornu of Paris, twenty-five years earlier (1870) : 
some persons even going so far as to doubt the very existence of 
a genus of fungi having the unique characters which he described. 
Anyone, however, who knows when, how and where to look for them 
will find no difficulty in obtaining them; and since the publication 
of my previous note at least two persons, Professor Lagerheim in 
Sweden and Dr, Minden in Germany, have again encountered them 
in Europe. 
Lagerheim (Bihang till k. Vet.-Akad. Handlingar, Band 25, Afd. 
III, No. 8, 1899) in the second part of his “ Mycologische Studien,” 
has published his interesting observations; and describes in detail 
two species, one of them new (M. brachyandra) and another which 
he considers a variety of Cornu’s M. polymorpha. In connection 
with this account he takes occasion to subdivide the genus, recogniz- 
ing two subgenera under Monoblepharis, and placing the two forms 
described by myself in a new genus Diblepharis ; basing this separa- 
tion largely on the fact that, in these species, zoosporangia occur 
which are morphologically the equivalents of oogonia, and in which 
biciliate zoospores are produced; apparently overlooking the state- 
ment in my former paper (l. c., p. 438) that they were zo/ peculiar 
in this respect. The fact that this new name has been accepted in 
other quarters has led me to publish the present note, although I 
have been reluctant to do so in anticipation of a thorough examina- 
tion of our New England forms which I have had in view. 
The oogonia of these fungi, which are terminal or intercalary 
enlargements of the main hyphae, or of short branches from them, or 
of both combined (figs. 7, 8, 10), have a more or less characteristic 
form in the different species; and with few exceptions are typically 
associated with a finger-like antheridial cell, which appears to be 
inserted on them, and is in all cases the terminal cell of a hypha, or 
