22 



Tho fusion occui^s at points of contact of the spharical bodies and 

 may taka placs contemporaneously throughout the entire mass of the elai- 

 oplast or, gradually, commencing at definite points. Treating this forma- 

 tion with absolute alcohol, the oleose substance dissolves out rapidl7 and, 

 if we later submit it to a solution of potassi-iXL iodide, one will observe 

 a residman of fundamental proteinaceous substance* 



In this species, besides the bulbs, there were examined the yotmg and 

 adult leaves in which, in the epidermal tissues as well as in the assimila- 

 tory parenchyma, the elaioplasts were lacking, 



Alo5 rhodacantha DC, 

 The elaioplasts occur in this species in the epidermis of the axis and 

 of the floral organs; they are lacking in the deeper tissues of the organs 

 above indicated, in the epidermis and in the parenchyma of the leaves, in 

 the young and -adult roots. 



Yucca filament osa Linn, 



"There is present, in addition to the cell nucleus, also a peculiar 

 body which stains brown on treatment with osmium." (,}£)* 



In the lobes of the perianth of this species one finds an elaioplast 

 in the cytoplasm of each cell of the epidermal tissue. It is of spherical 



form or nearly so, colorless, or slightly yellowish, of- smaller dimensions 



cell 

 than the /nucleus, and is markedly refractile. 



In the youngest stage i% is found alvifays ne?«r or in the neighborhood of 



the nucleus; in the adult stage some of them are slightly remote from the 



nacleus, while still others maintain a median position. With osmic acid they 



become blackj with Sudan III they stain intensely red (Pl, XIII, fig. 10) 



and show all the reactions of proteinaceous substance, in virhich respect their 



structure is more similar to that of the elaionlasts of Pol lanth_es tiibero^a. 



