24 Mr. Ha worth's nav Arrangement 
-5 
involved and intricate state of the whole genus absolutely required 
it, I redoubled my exertions and. new modelled the whole ; 
and, with the assistance of the living plants themselves (which I 
found indispensably necessary to have always before me), have 
given to my speciftcce differentia that decisive kind of perspicuity 
which they could not possibly have received in any other way. 
I claim no merit on this account, because any other person, of 
equal diligence, might have done as much, perhaps more, had he 
been in possession of the same advantageous materials. 
Exclusive of all the foregoing species and varieties, which I 
have described from the living plants, I have still a knowledge, 
from figures and their accompanying descriptions only, of the 
following species ; an account of which, in a systematical man- 
ner, I am advised to add as a necessary appendix to my Arrange- 
ment, that they may no longer remain the opprobrious impedi- 
ment of such as are engaged in the study of this genus. The 
reader must accept them, as I have done, upon the fidelity alone 
of the authors from whose works I have taken them up ; whose 
names (long since enrolled in the Nomenclature of the science) 
are at once familiar and respectable to the ear of a botanist, viz. 
Muntingius, Plukenet, and Petiver, Commeline and Tilli. For the 
most part they appear to me tolerable figures ; and, from the ac- 
curacy which some well-known species accompanying them are re- 
presented with, I am inclined to believe that they are themselves 
not very imperfect. This, however, must be left for time to de- 
velop. They are all, without a doubt, specifically distinct from 
each other; and probably from all my preceding species and vari- 
eties also. I do not think any of them have hitherto been in the 
British collections ; neither have they, as yet, been named by any 
systematic writer, although some of them have been erroneously 
referred to well-known species. 
anomala. 
