292 CHARACEJE INDIÆ ORIENTALIS 
on the side of the leaf opposite to that on which the gall breaks forth, 
corresponding with the insertion of the stem. Almost every specimen 
is beset with a minute parasitic fungus, which appears to be undescribed. 
It may be thus characterized :— 
Sphzeronema epicecidium, n. s. peritheciis minutis innatis nigris ore 
prominulis ; sporidiis variis plus minus obovatis minimis 
Tab Our plate shews (Fig. 1.) the gall of the natural size, 
and a magnified view (Fig. 2) as it is infested with the parasite. 
Fig. 3. the perithecia, as seen from above, springing from an obscure 
stratum of flocci, which are more or less confused with ihe outer cells 
of the gall, beneath which the larger cells of the subjacent tissue are 
visible. Fig. 4. spores highly magnified. 
CHARACEÆ® ÍNDLE ORIENTALIS ET INSULARUM MARIS PACIFICI ; 
or characters and observations on the CHARACES of the East Indian 
Continent, Ceylon, Sunda Islands, Marians, and Sandwich Islands ; by 
Dr. ALEXANDER BRAUN. 
The East Indian Characee are far less peculiar than those of Aus- 
tralia, the greater part of them being found also in other parts of the 
world, although exhibiting different varieties. It is remarkable that 
several of the Hast Indian species agree with those of South America 
and the warmer parts of North America. In treating the single species 
I shall specify these relations. In this enumeration of the East Indian 
Characee, the herbarium of Sir W. Hooker has furnished me with the 
richest materials; but I regret not having found in it the species enu- 
merated in Dr. Wallich’s Catalogue. Other valuable additions were 
furnished to me by Agardh, Meyen, Bellanger, Perrottet, &c. ~ 
doubis concerning the synonymy cannot yet be cleared up; but I hop: 
that the communication of these remarks will give to others the oppor- 
tunity of removing them. 
Genus I, NITELLA. 
Subgenus A. NiTELLA. 
a, Nelle furcate. 
, ophylle. 
1. N. acuminata, var. Bellangeri ; monoica, robustior, flexilis ; verti- 
cillis e foliis 6-8, sterilibus remotissimis e foliis elongatis, nonnisi 
