506 Prof. Don’s Descriptions of Indian Gentianez. 
since adopted and confirmed by Borckhausen, Schmidt and others. I am 
aware much difference of opinion exists with respect to the multiplication of 
genera, but in the present instance, as the species will be found grouped much 
more naturally than in any method hitherto pursued in general systematic 
works, those who object to them as genera will see the advantage of adopting 
them.as sections. Considering the many regions, especially in the southern 
hemisphere, that are yet but partially explored, it is not intended that the 
accompanying table should be taken as a complete view of the geographical 
distribution of this family, but only as exhibiting an approximation to one 
hereafter to be filled up by the discoveries of future travellers. The names 
of several genera occur in that table, which are not recorded in any of the 
systematie works yet published: for an accoünt of these I beg to refer to the 
fourth volume of my brothers ** General System of Gardening and Botany.” 
I ought to notice, that some errors have crept into that account in trans- 
cribing from my notes, and from the circumstance of my not having had an 
opportunity of seeing the proof-sheets; but most of these errors will be found 
corrected in the present memoir. I am now disposed to refer Selatium and 
Eudoxia to Gentiana, and to consider them as forming two sections of that 
genus than as groups of a higher value, and Ulostoma fimbriatum may be re- 
garded as constituting a section of Gentianella, only differing in the whole of 
the inside of the tube of the corolla being clothed with filamentous appendages. 
The Selatium multicaule appears to connect Selatium and Gentiana. The 
genus Glyphospermum is remarkable on account of its ligneous stem and 
its apparently moneecious flowers. 
