10 Mr. Brown’s Account of a new Genus of Plants , 
proportion of vessels. The cells or utriculi are nearly sphaerical, 
slightly angular from mutual pressure, and, in the specimens 
examined at least, easily separable from each other without la¬ 
ceration. I have not been able to detect perforations on any 
part of their surface ; but extremely minute granules, originally 
contained in great abundance in the cells, and frequently found 
adhering to their parietes, may readily be mistaken for pores. 
The structure of vessels either in the column, perianthium or 
bracteae, in all of which the} 7 are apparently similar, has not been 
satisfactorily ascertained. They may be supposed to approach 
most nearly to the ligneous, though certainly unaccompanied by 
spiral vessels, which do not appear to exist in any part of the 
plant. 
The same internal structure is continued below the origin of 
the bracteae, down to the line at which the vessels of the root ap¬ 
pear to terminate, and where an evident change takes place 
[plate 20. and 22. f. 1.). 
The Perianthium and Bractea in their cellular texture very 
nearly agree with the column, except that in their more foliaceous 
parts the cells are considerably elongated. 
I have not found in any part of their surface, or in that of the 
column, those areolae universally considered as cuticular pores, 
and which, though of very general occurrence, do not perhaps 
exist in the imperfectly developed leaves of plants parasitic on 
roots. 
In the external composition of the column, the part most de¬ 
serving of attention is the Anthera ; for in apparent origin, as well 
as in form and structure, it presents the most singular modifica¬ 
tion of stamen that has yet been observed. 
It appears to me of importance to inquire into the real relation 
which so remarkable a structure bears to the more ordinary states 
of Anthera. 
A satis- 
