A TRIBE OF LEGUMINOSEX. 9 
the staminal tube is always split to the base on the upper side, 
and sometimes also on the lower side; the ovary often contains 
but a single ovule, and seldom more than four. The character 
derived from the foliage is tolerably constant; a very few species 
may be, however, occasionally found with the leaflets nearly oppo- 
site, and, in perhaps a majority of cases, one or two of the lowest 
pair of each leaf may be opposite, or nearly so, but always with 
the upper or intermediate ones alternate. There are also a few 
species (Dalbergia Amerimnum, Ecastaphyllum Brownei, and 
the four Cyclolobiwms), in which the leaves are reduced to the 
terminal leaflet ; the affinities of these must be judged of by other 
characters. 
The second subtribe, the Lonchocarpee, form the approach to 
the arborescent Galegee ; the fruit, always dry and usually flat, is 
nearly of the same consistence throughout, not specially hardened 
round the seeds, although often more or less contracted between 
them, so as, when not flat, to become torulose or moniliform, and 
when very flat, showing occasionally (but very rarely) a slight 
tendency to split, although never, so far as I have seen, really 
opening in two valves. The flowers afford no absolutely constant 
character, but in the majority of species the keel-petals are strictly 
united along the outer edge from the middle upwards, the wings 
often adhere laterally just above the claw to the keel, the vexillum 
has occasionally two calli, or the two edges folded in at the base 
of the lamina. The upper or vexillary stamen in Lonchocarpus, 
Derris, and Piscidia, is very shortly free at the base, then united 
the greater part of its length with the others into a complete tube, 
which splits open only when forced by the swelling of the ovary : 
an arrangement common in Phaseolee and some Galegee, but not 
observed in any Dalbergiee, except these three genera. The ovules 
are often numerous. The character derived from the foliage is 
More constant: the leaflets are always strictly opposite, excepting 
here and there in a luxuriant side branch, where a tendency may 
be occasionally observed to break out into a slightly alternating 
arrangement. Stipelle occur occasionally, but not frequently. 
Ina very few species the leaflets are reduced to three, and in one, 
chocarpus, they are solitary. In Platymiscium the leaves as 
Well as the leaflets are opposite, which only occurs in the whole 
family of Leguminose in this genus, in some species of Dipteryz, 
and in a few genera, chiefly Australian, of Podalyriee, and Genistec. 
In inflorescence, Lonchocarpus and its nearest allied genera have 
a peculiarity which brings them still more in connexion with 
