3°8 
Batters . — On some New 
Algae, amongst which Microcoryne ocellata , Stromf. — an Alga 
up to that time known only from a single Norwegian locality, 
and, I believe, only once found there by the late Dr. Stromfelt, 
the founder of the genus — and Buffhamia speciosa are especially 
worthy of mention. I found these two species frequently 
growing side by side on the same branch of Castagnea 
Griffithsiana , and I think it worth noticing that, whilst in the 
host-plant the asexual unilocular sporangia are the only 
reproductive organs known, in both the epiphytes plurilocular 
sporangia are alone found. In substance and colour, and 
more or less in structure, the fertile fronds of Buffhamia 
resemble the simple branches of the host-plant, and at first 
I thought I had really found the long-looked-for gametangia 
of Castagnea Griffithsiana ; but a closer examination at once 
undeceived me, the junction between host and epiphyte being 
clearly marked, to say nothing of the entirely different 
development of the two plants. I may here mention that, 
whilst I have seen Microcoryne ocellata on a variety of other 
hosts, e.g. Chorda Filum , the original host-plant on which 
Dr. Stromfelt found it, Rhodymenia palmata , Zoster a marina , 
&c., I have up to the present found Buffhamia only on 
Castagnea Griffithsiana , although I have carefully searched 
for it on the other plants which usually accompany that 
species. 
Buffhamia speciosa occurs either in single isolated specimens 
or, much more frequently, in groups of from one or two to 
fifty or a hundred individuals, the epiphyte often covering 
a branch of the host-plant for the distance of an inch or more 
with a thick fringe of its tiny fronds. The olive-brown 
cylindrical fronds are always perfectly simple, and taper more 
or less to both base and apex. They vary in length from 
a quarter to an inch and a half in length, and are generally 
about i mm. in breadth. As has been already said, when 
mature and fertile they resemble the branches of the host- 
plant in some respects, though when young the fronds in no 
way resemble a Castagnea , but are much more like sterile 
specimens of Asperococcus or Scytosiphon in general appear- 
