234 



ORGANOGRAPHY. 



limb at right angles to it, as in Forget-me-not {Myosotis) {fig. 

 468), and Bittersweet {Solanum Dulcamara). 



6. Urceolate or pitcher- shaped, when swollen in the middle, 

 and contracted at both the base and apex, as in the Purple 

 Heath {Erica) {fig. 469) and Bilberry {Vaccinium Myrtillus). 



Fig. 467. 



Fig. 468. 



Fig. 469. 



Ftg. 4C7. Flower of a species of Primula, c. Calyx, within which is seen a 



salver-shaped corolla p. t. Tube of the corolla. I. Limb Fiff. 408. 



Flower of the Forget-me-not i3lyosotis 2wJustris). p. Rotate corolla. ?•. 



Scales projecting from its limb Fig. 409. Flower of a species of Heath 



(Erica), c. Calyx, within which is an urceolate corolla, t, I. 



B. Irregular Monopetalous Corollas. 

 scribe the following : — 



Fig. 470. Fig. A\ 



-Of these we shall de- 



1. 



1. Labiate or lipped. — When 

 the parts of a corolla are so united 

 as to divide the limb into two por- 

 tions which are placed superiorly 

 and inferiorly, and the upper por- 

 tion overbanging the lower, each 

 without closing the orifice of the 

 tube, so that the whole resembles 

 in some degree the lips and moutli 

 of an animal {figs 470 — 473), the 

 corolla is termed labiate, bilabiate, 

 or lipped. The upper lip i.s usually 

 composed of two ])etnls, whicli are 

 either completely united, as in the 

 WhiteI)ead-nettle(Z«//a"M;Hr//6M;H) 

 {fig. 470), or more or less diviiled, 

 as in the lloscmary {llosmurimts ) {fig. 472), Teucrium(y7^. 471), 



Fig. 470. Kinjient corolla 



Hcml-nettle {Lniniiim). ^'ig. 



471. Back view of the flower of 

 n species of Trucriiiw. showing 

 the bitid upper lip of the curolla. 



