Politis, loannes. gsga^.Assi^aut in the Botanical Institute of the 



Sosal University of Pavia . " ~ ^^ 



ON A SPECli^ CELLULM BODY FOUl^n) BT TITO OECHIDE. Translation of: 



Sopra uno specials corpo cellulare trovato in due orchidee. a/ 



Atti 1st. Bot. Univ. Pavia. II, lU; 377-3S5. pl. xix. igiU, 



In two species of orchids, Caelog^ne ^^istata Lindl., and Bria 

 Stella^ Lindl., a fact was noted which confirms the object of the present 

 study. * 



Coelog^/ne jgristata Lindl. 

 In the leaves of the perigonium and in the gynostemium of this 

 species there is to be noted in each cell of the epidermal tissue and of 

 that immediately adjacent thereto a granulose protoplasm in which may be 

 found immersed a very large spherical nucleus, abundant leucoplasts, 

 which are round or oval, and generally active(with amilacei inclusions), 

 situated preferably roundabout the nucleus, and, finally, a body which, 

 from its chemical constitution, is different from that as yet found in 

 the plant cell. 



Such a body is distinguished by its physical property and particularly 

 by the special and characteristic refract ility with which it is endoxved. In 

 the living cell it appears spherical, colorless, of homogeneous aspect, and 

 of considerable dimensions, so much so that' in its complete development it 

 may attain to dimensions slightly inferior to those of the nucleus. 



It is found in the cytoplasm now in the midst of the cell, now near 

 the cell wall, withoiit relation either to the nucleus or to the leucoplasts. 

 There is ordinarily one per cell, rarely, however, two or more. Such bodies 

 are fotind even in the epidermis of the floral axis. 



a/ See also: Efendiconti dell' Ace. dei Lincei, anno I9II. 



