eer 
are beautiful microscopic objects, but particularly C. virgatulum, 
for I find C. Daviesii very generally infested by parasites still more 
minute than itself, and particularly in and about the axillary ramuli. 
I do not find it so generally fertile as C. virgatulum; the crowd- 
ing of parasites, and collection of dirt about the ramuli where the 
tetraspores are borne, probably destroying the fructification. 
This little plant bears the name of the late Rev. Hugh Davies, 
an able botanist of the last generation, whose name will be familiar 
to the readers of ‘English Botany.’ He discovered it early in the 
present century, on the Welsh coast, and it has been found 
(under one or other of its varieties) in most parts of our shores, 
on those of Europe, and in America. 
Fig: 1. Part of a frond of Ceramium rubrum, infested with CALLITHAMNION 
Daviesu. 3. Fronds of Callithamnion Daviesii :—magnified. 3. Portion 
of a branch. 4. Axillary ramuli and tetraspores from the same :—more or 
less highly magnified. 
