158 



NATURAL HISTORY OF PLANTS. 



without laterally adhering to it. They have a female calyx with 

 four divisions more or less deep, relative to which the ovary is 

 inferior in Maquira and superior in Pcrebea. The former are there- 

 fore here the analogues of Olmedia, whilst the latter nearly corre- 

 spond to Pseudolmedia and Antiaris. 



Cdstilloa tiustioa. 



Fig. 122. Florifercraa branch ($). 



Now let there be, in a concave receptacle like that of the Antiaris, 

 a female flower the ovary of which occupies the central cavity, and 

 on the thickened margin of the receptacle let there be grouped 

 glomerules of male flowers, inserted perigynously in relation to the 

 gymecinm, and we shall have an inflorescence much resembling the 

 flower of the Rose, with this difference that the stamens are replaced 

 by male inflorescences. This happens in a small group to which 

 the name of Brosimcœ has been given. Take, for example Lanes- 

 sania (fig. 123), a tree of northern Brazil. The receptacle of its 



