™ 2 



A little later Zimmermann (10) established the presence of elaioplasts 

 in the stele and in the subepidennal assimilatory tissue of Psilotum, in the 

 internal epidermis of the lobes of the perianth of Maxillaria picta . in the 

 epidermis and in the parenchyma of the perianth and in the floral axis of 

 Beschorneria bract eata . 



Finally, Eaester, comparing the elaioplasts to the oily bodies of 

 mosses, found that the former differed from the latter by their behavior in 

 their stroma and in the oily substance, hut were similar to them in structure. 



With the work of Kuester (j) concludes the series of publications 

 which, so far as I know, have been written on elaioplasts, which, as one sees, 

 were encountered in only a fev; genera of monocctyledons, namely, five of the 

 Liliaceae, two of the Amaryllidaceae , and three of the Orchidaceae. 



In th«^ dicotyledonous plants nobody has found elaioplasts. 



last year I encountered in the epidermal cells of scales of function- 

 ally active "bulbs of Hippeastnam aulicum some spherical bodies strongly re- 

 fractile to light, joined Jtgether in the form of bunches of grapes, which 

 in their physical properties and in their microchemical reactions were 

 identical to those which Wakker, Zicomermann, and Baciborski described vnd.ev 

 the name of ela^ioplasts. 



This fact led me to the following researches the results of which are 

 summed up in this contribution. 



a The cellular organs observed by E. Beer (On ela-ioplast - Ann. Bot, 

 XXIII, 63-1909) in various parts of the flower of a Gaillardia can not, in 

 my opinion, be ascribed to elaioplasts, but to chrcmatophores , since in the 

 elaioplasts neither chlorophyll nor other pigments are formed. 



