scattered along the branches, which are then frequently flexuous or genicu- 
late, often secund. Zeé¢raspores scattered in ramuli. Colour a rosy but 
fugacious red, sometimes becoming browner in the herbarium. Substance 
cartilagineo-membranaceous, shrinking in drying, in which state the frond 
adheres pretty firmly to paper. 
This plant is sometimes more ramulous than represented in 
the figure, and it varies also in colour, from a brilliant to a very 
pale red. Formerly I described and distributed the more ramu- 
liferous and bright-coloured but barren specimens, under the 
name Hymenocladia Ramalina ; whilst many of the less-branched 
and paler specimens became mixed with duplicates of Gracilaria 
dactyloides, and have, I fear, been partly distributed under that 
name. It is these specimens which are referred to in the de- 
scription of G. dactyloides (Tab. LX XX.), as differing m ramifi- 
cation from other examples of that species. A more careful 
examination now leads me to refer these specimens, some of 
which are in fruit, to what I had formerly placed, incorrectly, 
in Hymenocladia, and to found the present species upon them 
unitedly. 
Our G. Ranalina seems to approach nearest to G. Domin- 
gensis, Sond., a West Indian species. 
Fig. 1. Gractbarta Ramattna,—the natural size. 2. Section through a 
ramulus and cystocarp. 3. Section through a ramulus, with immersed 
tetraspores. 4. Tetraspores :—the latter figures magnified. 
