ALGE OF MAURITIUS. 149 
verse rows.—That this is the Zonaria furcellata of Agardh, 
(whose specimens came from New Holland,) I have little 
doubt; but I am by no means equally certain that it is speci- 
fically distinct from D. dichotoma, a common variety of which 
it much resembles. Among a vast number of specimens, 
however, in this collection, I could not detect any variation 
in the form or breadth of the frond: and I am, therefore, 
willing, for the present at least, to assign it a distinct place. 
6. Stylophora vesicata, (Harv. MS.); fronde membrana- 
cei foliacea vel polymorpha sinuosa, marginibus inflatis. 
The close affinity this curious plant bears to the Stylophora 
sinuosa of Agardh, leaves no doubt of its genus; but it is 
much to be wished that more perfect specimens than those 
that have fallen under my observation, could be procured, 
that we might be enabled fully to describe it.—Root? 
Frond spreading, ulvoid or foliaceous, of no certain outline, 
olivaceous, variously plaited and lobed, sinuous, its margin 
often inflated; colour olivaceous: structure composed of in- 
terlacing fibers, connected by membrane, the surface distinctly 
reticulated. No perfect fruit has been observed, but several 
Specimens were dotted all over with little black specks whose 
structure I could not satisfactorily ascertain. 
T. Padina Durvillei, (Bory, in Duper. Voy. v. i. p. 147. 
t. 21, f. 1.?); frondé latissimá coriaceá usque medium stu- 
posi superne ramosà, ramis flabelliformibus membranaceis 
crebré zonatis, margine revoluto. 
A fine species; larger, coarser and more closely zoned 
than P. Pavonia, to which, perhaps, it is too nearly allied. 
Indeed it is next to impossible to fix the limits of the flabellate 
species of this genus. The colour of Bory's plant is a little 
different from that of ours, which creates a doubt as to their 
identity. 
FLORIDE Æ. 
8. Thamnophora Telfairia,* (Hook. and Harv. MS.); 
* Little did we think, whilst naming this plant in honour of the gifted 
