A TRIBE OF LEGUMINOS X. 7 
Even the common PAaseolus vulgaris seeds, or haricofs, are apt to 
be deleterious (and fortunately at the same time disagreeable to 
the taste) if stewed without throwing away the first water. 
The geographical distribution of Dalbergiec is somewhat affected 
by their uniformly woody habit, requiring years before they attain 
the reproductive age; for any isolated stragglers are, on that account, 
more exposed than the shorter-lived races to the chances which pre- 
vent their permanent establishment in a new locality, and the pro- 
gress of their species is thus continually checked. They include 
none of those weeds of cultivation which everywhere follow man in 
his migrations. Valuable and ornamental as many of them are, very 
few appear to be ever cultivated or planted. Very few again are 
sufficiently maritime to admit of their being accidentally carried 
across oceans. An adventitious species is therefore of very rare 
occurrence, and the great majority have but a very limited area. 
There is thus not a single species common to Asia and America. 
Only five American species, Ecastaphyllum Brownei and E. mone- 
tarium, Drepanocarpus lunatus, Lonchocarpus sericeus, and Andira 
inermis have spread over to the opposite coast of Africa, and one, 
probably of African origin (Pterocarpus esculentus), has also been 
received from Cayenne. Among the Asiatic species one only, 
Derris uliginosa, extends across to Western Africa, and the same 
species with two others only, Pongamia glabra and (perhaps) Derris 
scandens, reach eastward as far as tropical Australia. Out of 
Seventy-three Asiatic species, віх only are common to the Penin- 
sula and the Archipelago, two more extending from Ceylon to the 
‘Archipelago; out of twenty African species, two, or perhaps three, 
are known to be common to the eastern and western sides, and out 
of 200 American species, five only stretch from southern or even 
central Brazil to the West Indies or Central America. 
The generic distribution is somewhat different. Regarded in 
this light, we must take natural genera only, those which have 
general differences traceable in their flowers or other organs, and 
not determined by the form of the pod, uniting Ecastaphyllum 
with Dalbergia, Drepanocarpus with Macherium, Lonchocarpus 
Pongamia, Piscidia and Müllera with Derris, Andirawith Geoffroya, 
and Pterodon with Dipterya. "We shall then find the two largest 
genera and one smaller one common to three continents. Derris 
(or Pongamia), thus extended to eighty-four species, has thirty-two 
Asiatic, nine African (including one from Asia and one from 
America), and forty-five American species, the Derris form pre- 
Vailing in Asia, but found also in America; whilst the Loncho- 
