AND PECULIAR FORM OF THE EMBRYO IN THE CLUSIACEZÆ. 257 
extraordinary embryonal development. In this last-mentioned family, the embryo of its 
exalbuminous seed exhibits, in like manner, a gigantic radicle furnished with exceedingly 
minute cotyledons; with this difference, however, that the cotyledons here are separated 
from the great body of the radicle by a slender free neorhiza or neck ; but if we imagine 
the suppression of this neorhizal extension in the Rhizobolacee, and the close approxima- 
tion of its minute cotyledons to its monstrous radicular mass, there would be little or no 
difference in the form of the embryo in the two families. At the same time that these 
circumstances tend to draw closer the affinities of the Clusiacee to the Hypericaceæ and 
Marcgraaviaceæ, they remove them to a considerable distance from the Ternstræmiaceæ, 
with which Order they have been hitherto considered to be most intimately related. At 
present, I will do no more than indicate these considerations, as it is my intention to discuss 
this question more extensively upon a future occasion, when I treat on the general 
organography, floral structure, and generic features of the whole Order, restricted as I 
propose it to be. I will merely observe, that in the course of this investigation, I have 
met with many singular deviations from usual forms, and numerous interesting facts 
well deserving of record. 
EXPLANATION OF THE PLATE. 
Tas. XXVI. 
Fig. 1. Seeds of Lipophyllum latum :—natural size. 
Fig. 2. A seed of the same, seen on the ventral face, with the prominent keel which covers the raphe : — 
much magnified. : 
Fig. 3. The same, seen laterally. : 
Fig. 4. The same, with the arilliform covering removed, and the raphe separated, showing the testa with 
its nearly apical diapyle, and basal micropyle. 
Fig. 5. Half of the se of die removed, showing the inner integument, with its apical chalaza. 
Fig. 6. The inner integument, with its chalaza. : 
. Fig. 7. Half of the inner integument removed, exhibiting the position of the enclosed embryo. 
Fig. 8. Embryo seen laterally, showing the small cotyledons in the apex, and the prominent striæ upon 
its surface. = 
Fig. 9. The same, seen on its ventral face, exhibiting the commissure between the cotyledons. 
Fig. 10. The same, viewed from the summit. _ j Tes 
Fig. ii Te section of the same, showing the external row of ducts which form the longitudinal 
stri: ; the neorhiza is seen in the centre. i d ot : 
Fig. 12. Longitudinal section of the same, displaying one of the cotyledons, the gigantic d wd 
enclosing the axile neorhiza, which is terminated at its upper extremity by the minu + p eur $ 
and at its base by its germinating point prior to its coleorhizal protrusion to form the o 
. the future plant :—all also much magnified. a 
. 13. hyllum letum, enveloped in its pulpy 
it x ise wie MC TU fiip disi, ad map removed, in order to show the ps mes = 
Fig. 15. The testa seen on its ventral face, displaying its large hilum, and the branching nervures 
imbedded raphe. 
