CHAP. VI.] 



COMPOSITE. 



99 



form a kind of cylinder, through which passes 

 the style, ending in a two-lobed stigma (see a 

 in Jig. 41). Most of the corollas are of two 

 kinds : viz. the ligulate, as exem- 

 plified in the floret of the wild 

 Lettuce {Lactuca virosd) shown in 

 Jig. 41 ; and the tubular, as shown 

 in a floret of the Cotton-thistle 

 {Onojwrdium Acantliium) see Jig. 

 Fig. 41.-LIGULATE 42. All the British species of 

 FLORET OF WILD Compositse have their florets either 

 Lettuce. entirely of one of these kinds, or 

 of the two mixed together ; but some foreign 

 genera have florets with two equal lips, cut 

 into three or four lobes, as shown 

 in a floret of Mutisia latifoUa, 

 at e. Jig. 46, p. 108. These flo- 

 rets are called bilabiate. It will 

 be observed that in all these ex- 

 amples, as indeed, in all the 

 flowers belonging to the order, 

 that the pappus {b, in Jgs. 41 and 

 42), is always on the outside of 

 the corolla, thus plainly indi- floret of the 

 eating its connexion with the cotton-thistle. 

 calyx. 



The order Compositse is a very large one, 

 above seven thousand species having been 



H 2 



Fig. 42.— Tubular 



