CONTRIBUTIONS TO BOTANY. 
“iO 
the capsule is also bilocular, and it splits into two valves, with a 
contrary dissepiment, which becomes quite free from them, upon 
the lateral margins of which the seeds are attached on both 
faces, — a structure quite that of the Catalpece : there is therefore 
an inconsistency in this small group, to which I will presently 
refer. 4. Eccremocarpea, where the capsule, though bivalvular, 
is unilocular, the seeds being affixed upon a prominent linear 
placentation that runs along the middle of each valve. This 
subtribe consists only of the genus Eccremocarpus, but the 
structure of its capsule and placentation differs in no way from 
that of Jacaranda, which is placed in the CatalpecE', if therefore 
this subtribe be maintained, Jacaranda must be transferred to it. 
In the first subtribe, the structure above defined, as regards 
the capsule, is universal. In the Monostictides the dissepiment 
is generally thin and coriaceous, but in the Pieiostictides it is 
thick and almost ligneous, in both cases consisting of two par- 
allel plates firmly conjoined together, and which frequently may 
be separated : when the seeds fall away, we may observe upon it 
the lines of cicatrices distinctly marked on both sides, near to 
and parallel with the margins, thus indicating the points of at- 
tachment and number of series of the seeds. In Amphiluphium 
Vautherii, for instance, these parallel plates easily come apart ; 
the dissepiment is at the same time marked by a nervure along 
its axis, showing where the carpels have been conjoined ; the 
imbricated seeds are attached near the margins, in four parallel 
rows (that is to say, sixteen series in all the four marginal sur- 
faces), and the points of their attachment are marked by long 
deep furrows, which, being close to one another and alternating, 
give to the margin the appearance of being cancellated by "a 
lattice-work of coarsely reticulated open spaces. A similar ap- 
pearance is . seen in Pithecoctenium, where the margins of the 
plates, are severally turned up at a right angle, like the edge of 
a tray, and this reflqcted portion is cancellated in the same 
manner, showing there the points of attachment of the seeds. 
In most of the Eubignoniecc, as in Adenocalymna, Arrabidcea, 
Amphilophium, Anemopagma, Pithecoctenium, &c., the two valves 
of the capsule, upon falling away, leave upon each side of the 
dissepiment (which remains attached to the peduncle, though at 
some distance from it) a concentric line of ligneous fibre, or 
replum, like that seen in the fruit of the Capparideee, but which 
cords do not remain attached to the placentae or seeds as in that 
family. These replum-like cords, which, before the dehiscence of 
the capsule, produce lateral ridges by intervening between the mar- 
gins of the valves, remain attached at their base to the peduncle, 
and often at their other extremity to the apex of the dissepiment. 
In Cybistax, where the dehiscence is in the middle of the two faces. 
