MORPHOLOGY OF BEPRODUCTIYE OEGAXS 163 



tuting the capitulvim, as in the Dandehon [Taraxacum); or 

 only in some of them, as in the outei- florets of Senecio (fig. 

 239). The apex of a ligulate corolla has frequently five teeth, 

 indicating the number of its component petals [fig. 316). 

 Fig. 314. Fro. 31,5. Fig. 316. 



Fig. 314. Personate corolla of the Sn.apdragon {.infir- 

 rhinum). /. Lower lip. ?i. Upper lip. &. Gibbous 



base. Fig. 315. Personate corolla of the Toad-flax 



{Linaria), spurred at its base. Fig. 316. Ligulate 



corolla of a Composite flower, with five teeth at its 

 apex. 



Fig. 317. 



Fig. Sl'.i. 



Fig. 317. Ligulate corolla of the Ox-eye {Clirysanthe- 



mum). Fill. 318. Digitaliform or finger-shaped 



corollaof theFoxglove (Bigilalispm-pm-m). Fig. 



319. Irregular rotate corolla of Speedwell ( Veronica). 



Besides the above-described forms of regular and irregular 

 -gamopetaloiis corollas, others also occur, some of which are but 

 ■jslight modifications of these, and arise froni irregularities^^that 



