136 SCHOMBURGK’S GUIANA PLANTS. 
very near the two last, but apparently distinct, especially in 
the pod. Algarobia, comprehending nearly twenty American 
species, is also allied to Stryphnodendron, but with a very dif 
ferent habit, and the petals in most, if not in all, the species, 
are woolly inside. I find I was mistaken in following other 
authors in describing the anthers as eglandular; the stipitate 
glands exist, at least in many species, but they are so small. 
and fall off so readily, that they can scarcely be seen in dried. 
specimens, except in the bud.  Gagnebina from the Mauritius, 
Filloea from tropical Africa, and Lagonychium from the 
Caucasian region, complete the list of thirteen genera of 
Eumimosee known to me, to which may perhaps be added 
Gleditschia, with the structure of the flowers of which lam 
not as yet perfectly acquainted. + 
260. Vachellia Farnesiana, Wight et Arn. Fi. Penins. 
Ind. Or. Y. p. 272.—Farnesia odora, Gusparini ex Linnea, 
v. XIII. Littbl. p. To4s-French Guiana. Leprieur, Herb. 
Par. n. 25. 
This genus, distinguished from the great mass of Acacias 
by its pod, the flowers being precisely the same, appears to 
comprehend a considerable Suipi of species, some of them 
American, where they are chiefly found in the West Indies, 
. Mexico, Peru, and Chili; but perhaps the greatest proportion 
are African. So far as regards the American species, 
form a natural group, andare easily distinguished from Acacias 
but the African ones, with which it is true I am as yet but 
little familiar, seem to run much into the true Acacias 
The greater number of the trees, however, which furnish the 
African gums, will probably be found to belong to J/achellia; 
‘but then the question arises, should not this group preserve 
_ the name of Acacia, and another appellation be given to the 
Australian Acacie and their congeners? In answer to this, 
Ido not see any reason to go farther back than Willdenow, 
who first established Acacia as a genus, and included therein. 
the whole of both groups; and as the number of species of 
that portion which includes the Australian ones is so Y ; 
much tbe largest, and the other has already received a generic 
