- 11 - 



So far as concerns the development of mthe bodies in question, it is 

 to be noted also that in this plant, as in the preceding one, they are not 

 derived by division from preexisting bodies and are not transmitted from the 

 mother cell to daiighter cells but arise through neoplasia of the protoplast. 

 In fact, they appear at first in the heart of the cytoplasm as very minute 

 coloTless spheres (PI. XVI, fig, 3 c), in the interior of which later begins 

 to form the red pigment (PI. XVI, fig. 3 c) . 



Such spheres grow and in complete development may sometimes attain the 

 dimensions of the nucleus. 



Later there begins to appear on them phenomena of degeneration. The 

 cyanoplasts, in fact, diminish in volume, while they present sparse vacuoles 

 in their mass, among which one may often distinguish a single larger central 

 one, Tinally, the cyanoplast disappears and its pigment expands into the 

 cavity of the cell, coloring the cell sap, which was at first perfectly 

 colorless. 



It is to be noted, finally, that in this species when the cyanoplast 

 at first appears it is colorless and its pigment begins to appear in the 

 interior later. 



In such colorless cyanoplasts, treated with iron acetate, osmic acid, 

 potassium bichromate, and with methylene blue, one is able to establish 

 easily the presence of tannin. 



Aq- ijuLlegia plandulosa Fisch. 

 Examining the flowers in this species, one often is able to find in 

 the violet-colorM petals some cells in which the color is not diffused but 

 is bounded instead, in one or more united spherical bodies. This presents 

 a development and structure of the cyanoplast similar to those described 

 above. Often in one or more points of their surface they show protuberances 

 (PI, XVII, fig. 7 ^1 their pigment shows all the reactions of anthocyanine . 



