26 



Tetramicra feicolor Eolf e. 



The elaioplasts of this species occur in the epidermis of the floraX 

 axis and of the leaves of the perigoniuoQ, They are found in the adult stage 

 generally some distance from the cell nucleus. They are of spheroidal form 

 and of a pale ochre color and present reactions which perfectly parallel 

 those characterizing the elaioplasts of the preceding species, 



Malvaceae. 



The elaioplasts are found in all species of Malvaceae alluded to, which 

 I have examined in the epideircial cells of young sprouts, of the petiole, of 

 the leaf blade, the floral peduncle, the calyx, and the corolla. They are 

 wanting in the ovule, in the seed, in the adult fruit, and in the roots. 

 They are of grape-lilse or irregular form and result always from the union of 

 very minute spheres the size and number of which are variable (PI, XIV, fig. 7} 

 PI, XV, fig. 2), Each sphere consists of a plasmatic stroma, including an 

 oleose substance. The plasmatic stroma treated with an aqueous solution of 

 iodide of potassium assumes an intensely brown color. Treated with nitric 

 acid and then with ammonia it turns yellow* Treated successively with sul* 

 phate of copper and potassium hydrate it takes on a violet color. 



The reaction to Millon's reagent is red, especially where the material is 

 heated. 



