di-trichotomous branching, and by there being but a single
articulation or cell in the space intervening between each furcation
; that is to say, every internode consists of a single cell.
There is no other British species in which this takes place regularly,
in all parts of the frond. It thus happens that tbe individual
cells, iu this species, are of extraordinary length, those of
tbe lower parts of the filament being sometimes more than an
inch in length, very frequently three quarters of an inch.
Conferva pellucida was first described by Hudson, in the Flora
Anglica, and has been adopted by all subsequent authors witb
the exception of Lyngbye, who unaccountably confounds it
with C. rupestris, a plant which is well distinguished by tbe
difference in its articulations, if there be no other character, as
there are many, to separate, it. Hudson’s expression “ articulis
s,” is alone characteristic of C. pellucida.
Fig. 1. Cladophoea PELLUCIDA :— of the natural size. 2. Portion of a branch:
3. Terminal articulation of the same :— more /