14(5 REPRODUCTIVE ORGANS. CHAP. III. 



cence, examples of flowers with a persistent calyx 

 that falls only with the peduncle ; and in the cat- 

 kin there are examples of scales that are deciduous, 

 as in Betula alba. 



Its figure. The figure of the catkin is sometimes globular, as 

 in the Cypress, and sometimes oval, as in the Hop ; 

 but it is more frequently cylindrical, as in the Wil- 

 low and Poplar. In Betula nana it is lateral and 

 erect ; in the Hazel it is terminal and pendulous. 

 In Sallx Croweana it is sessile ; in Betula alba it is 

 pedunculate. If the scales are smooth the catkin is 

 smooth, as in SalLr amygdal'ma ; but if pubescent 

 or rough with hairs, as in SalLr nigricans, so also is 

 the catkin. 



SUBSECTION XII. 



Descrip- The Spadix. The spadix (P/.V. Fig. 12.) is a 

 species of inflorescence consisting of an assemblage 

 of flowers which, like those of the catkin, are ge- 

 nerally incomplete; but which are supported upon 

 a common and vertical foot-stalk, that is invested 

 with a leaf-like sheath from the base of which it 

 issues. The term was originally adopted by Lin- 

 naeus, and applied to denote merely the general re- 

 ceptacle of the flowers of the Palms ; but as it forms 

 also evidently a distinct species of inflorescence 

 it ought unquestionably to be arranged as such ; 

 because the inflorescence includes the receptacle, 

 but the receptacle does not include the inflores- 

 ence. 



