DESCRIPTION OF THE PLATES. 
Plate 54. — Adenocaltmna prehensile. 
Fi^. 1, part of a branch. Fig. 2, a capsular fruit. Fig. 3, one of the valves removed, 
show-ing the free replum on each margin of the dissepiment, and the attached seeds. 
Fig. 4, a seed, seen on its dorsal side. Fig. 5, the same, seen on the ventral face, showing 
its large hilum. Fig. 6, the same, seen on its edge. Fig. 7, a longitudinal section of the 
seed, showing the semi-bilocular cell formed within the crustaceous testa, in which are 
lodged the two lobes of the embryo. Fig. 8, a transverse section of the seed, showing 
the septiform division, with an aperture in the centre, in which the radicular portion 
connecting the two lobes of the embryo is confined. Fig. 9, the exalbuminous embryo 
covered by the inner integument, showing the two deeply bilobed cotyledons, connected 
by the small radicular portion, at one end of which is seen the small chalaza, and at the 
other the point of the radicle directed towards the hilum. Fig. 10, the embryo deprived 
of its inner integument. Fig. 11, a transverse section of the same. 
Plate 55. — Adenocaltmna? c.5:sium. 
.4 portion of the plant in fruit, showing the manner of the dehiscence of its capsule and 
its free replum. 
Fig. 1, a seed, viewed on the ventral face. Fig. 2, the same, seen on the dorsal face. 
Fig. 3, a side view of the same, showing the hilum on the margin. Fig. 4, a seed with 
one of the faces of the discal portion removed, to show the septiform division with the 
aperture in the centre and the two cells thus formed, in which the lobes of the cotyledons 
are placed. Fig. 5, a transverse section of the same, with the septum having an aperture 
in the centre. Fig. 6, the embryo, covered by the inner integument, with the chalazal 
spot in the connecting portion. Fig. 7, the same, deprived of its integument. 
Plate 56. — Tanaectem albiflorem. 
A portion of the plant in flower. 
Plate 57. — Tanaeciem albiflorem. 
Fig. 1, a capsule about to open at the apex, where the replum is beginning to separate 
from the edge of the dissepiment and from the margins of the two valves. Fig. 2, a 
transverse section of the same, showing the position of the dissepiment, the two bands of 
the replum, and the imbricated seeds, in regard to the two valves ; on one of the valves 
are seen the cicatrices of the hilar points of attachment of the seeds, in four series upon 
each side. Fig. 3, a seed. Fig. 4, the same, seen on its edge, showing the hilum upon 
its margin. Fig. 5, the same, seen on its edge from one of its compressed margins. 
Fig. 6, a longitudinal section of the seed along the central line across the hilum. 
Fig. 7, a longitudinal section of the same through the margins, showing a semiseptum 
opposite the radicle, and the chalaza on the opposite side. Fig. 8, a transverse section of 
the same, parallel to the hilum. Fig. 9, the exalbuminous seed covered by its inner 
integument, showing its deeply lobed cotyledons, the point of the radicle in one sinus, 
and the chalaza in the bottom of the other. Fig. 10, the same, with the integument re- 
moved. Fig. 11, the same, seen on its edge: ali of the natural size. 
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