A TRIBE OF LEGUMINOSZ. 21 
ficidia and Wisteria, is a subject I reserve for future consideration, 
none of that set of Galegee having come within the Brazilian 
flora. 
Returning to the Lonchocarpoid genera which I have brought 
into or retained in Dalbergiee under the five names which head 
this article, it will be seen that I have, on the sole consideration 
of the pod, maintained as distinct, for the reasons above mentioned, 
the three isolated species so long known as Pongamia, Piscidia, 
and Müllera, adding, however, to the latter Zuccarini’s Cyanobotrys, 
and distributed the remainder under Lonchocarpus and Derris, the 
former consisting of thirty-eight American species, seven African, 
and one common to both continents, and including Neuroscapha, 
Tul., Sphinctolobium, Vog., Philenoptera, Fenzl, whilst Derris con- 
sists of three American and twenty-nine Asiatic species, inclu- 
ding Brachypterum, W. & Arn., and Aganope, Miq. In Loncho- 
carpus the pod is flat, considerably longer than broad, varying in 
every possible gradation from the thin, paper-like consistency which 
characterized the Philenoptera, Fenzl, to the thick, hard substance 
of Sphinctolobium, without any longitudinal wings, but with a 
frequent tendency to thicken at the seed-bearing suture, especially 
at the point of insertion of the seeds, sometimes giving the edge 
а flat or concave surface of above 8 lines in breadth; and it was 
this peculiarity, observed in its greatest degree, that suggested 
e’s genus Neuroscapha. I have, however, been able to make 
but very little use of these differences in establishing sections of 
the genus, and have been obliged again to have recourse to its 
subdivision only into series, founded chiefly on inflorescence, and 
‘partially also on indumentum, and on the presence or absence of 
callous thickenings or appendages at the base of the vexillum ; the 
latter a character which, although of specific constancy, proves of 
less importance for sectional or generic distinction than I at one 
time believed it to be. 
Derris has the flat pod of Lonchocarpus, varying likewise in 
consistency from thin and membranous to thick and almost woody, 
without, however, any special thickening of the upper suture ; and 
it is generically distinguished by the upper edge, and sometimes 
the lower one also, being bordered by a narrow longitudinal wing, 
Which varies, like the pod itself, in consistency, but is always di- 
Stinctly marked off by a prominent longitudinal vein or nerve on 
each side indicating the real suture. In the subdivision of the 
‘genus, characters rather more marked seemed to warrant the esta- 
blishment of sections, although they are too artificial to be con- 
