30 i A COMMENTARY ON THE SECOND BOOK 
CAP. XXVIII. 
PiGMENTARIA, p. 79. t. 19. 
This is, no doubt, the Bixa Orellana (Willd. Sp. PI. ii. 
1154.), a native of America, which has now spread all oyer 
the east. 
CAP. XXIX. 
Alliaria, p. 81. t. 20. 
Under the name Tamalassier, M. Poiret (Enc. Meth. 
vii. 560) gives an account of this tree, taken from Rum- 
phius, and without any conjecture concerning its affinities. 
I think that I have found the tree on the hills south from 
Goyalpara in Camrupa ; and the specimens, which I have 
sent to the India House, I have called Guarea Alliaria, 
because the difference between the Guarea and Trichilia, 
by Willdenow and Jussieu, is made to consist chiefly in the 
former having eight, and the latter ten, stamina. M. De- 
candolle, however, places the difference chiefly in the Tri^ 
chilia having three cells in the fruit, and the Guarea ha- 
ving four cells. According to him, therefore, the Alliaria 
should be a Trichilia^ very nearly allied to the T. alliacea 
of Forster. These, however, are trifling and uncertain dis- 
tinctions ; nor does either M. Decandolle or J ussieu point 
out any thing in the habit, by which the two genera should 
be distinguished, and they should therefore be united. 
I shall here describe, not only what I take to be the AU 
liaria, but several other trees, of which I have given speci- 
mens to the India House, and which cannot be separated 
from the TrichiUea; of Decandolle, and this will serve to 
show, that in this natural assemblage of plants the posi- 
