ORGANS OF REPRODUCTION. 209 



Fig. 413 



Fig. 412. Cymose inflorescence of the Centaury {Erythrcea Centaurium), 

 a', a", a'", a"". Floral axes. /', /", /"', /'"'. Flowers terminating those 

 axes respectively Fig. 413. Spiked cyme of Sedum. 



the division of the 

 cyme takes place in 

 threes, it is said to be 

 trichotomous. Cymes are 

 also frequently charac- 

 terised as corymbose, 

 or umbellate, accord- 

 ing as they resemble 

 the ordinary kinds of 

 indefinite corymb, or 

 umbel. 



When a definite in- 

 florescence does not 

 assume a more or less 

 corymbose form as in 

 the true C3Tne just de- 

 scribed, it is best cha- 

 racterised by terms de- 

 rived from the kind 

 of indefinite inflores- 

 cence to which it bears 

 a resemblance. Thus 

 when a cyme has ses- 

 sile flowers, as in the 



Spfliim ( fin 4.1 -^^ it i<? ^^- ^1*- Racemose cyme of a Campanula, a', 

 Oeaum {^Jig. 41cJ ), n is ^, p^^^^^ ^^^^^ terminated by a flower /', 



'Hed which is already withering, a", a", a". Second- 

 ary axes, each ending in a flower,/'',^',/*'. 



described as 



sp 



