oO On On A /fin i ties <>f CeratophijUacea. 



rather than the ptrioarpic direction of the embryo should be 

 particularly indicated ; since the former affords characters of 

 the highest rank, from which the latter may be inferred when 

 considered in connexion with the direction of the seed. It is 

 also desirable that the classification and nomenclature of ovules 

 proposed by MiiUl* should be extended to .seeds, and gene- 

 rally employed in systematic descriptions, which would thus be 

 rendered much more simple and perspicuous. Thus, if we 

 nie the expression, teed anatropous, it is understood that the 

 micropyle, and consequently the radicle, is situated in the im- 

 itc vicinity of the hilum, and thai the chalaza, or organic 

 base of the ^cci\, occupies (if the embryo be straight, or nearly 

 so,) the portion most remote from the hilum, with which it is 

 connected by means of a prolongation of the funiculus, called 

 the raphe. t 



• Ann. Science* Naturelles, vet. 17. 



t An instance <>f the separation of the raphe from the testa, in one of 

 the two seeds of the fruit ofSeringia )>lniyphylla, is represented l>y M. 



<iny in the seventh volume of the Mem. du Museum, t. 17. 



Vi*fc 





9 ** 



* 



