OEGANS or REPRODUCTION. 



23; 



&c. ; and the loAver of three, which are also, either entire, as in the 

 Rosemary {fig. 472), or hifid, as in Laraium {fig. 470\ or trifid, 

 as in ttie Galeobdolon {fig. 473). When a labiate form of coroUa 

 has the upper lip much arched, as in the White Dead-nettle {La- 

 Fig. 472. Fig. 473. 



Fig. 472. Flower of Rosemary (Rosmarinus') Fig. 473. Front view of the 



labiate corolla of Galeobdolon. 



mium) {fig. 470), it is frequently termed ringent. The labiate form 

 of corolla gives the name to the natural order Labiatae, in the 

 plants belonging to which it is of almost universal occurrence. 

 It is found also in certain plants belonging to some other orders. 

 2. Personate or viasked. — This form of corolla resembles the 

 labiate in being divided into two lips, but it is distinguished by 

 the lower lip being 



approximated to Fig. 474. Fig, 475. 



the upper, so as to 

 close the orifice of 

 the tube or throat. 

 This closing of the 

 throat is caused 

 by a projection of 

 the lower lip called 

 the palate. It oc- 

 curs in the Snap- 

 dragon {fig. 474), 

 Toadflax {Lina- 

 ria){fig. 475), &c. 

 In the Calceolaria 

 the two lips be- 

 come hollowed out 

 in the form of a 

 slipper, hence such 

 a corolla, which is 

 but a slight modification of the above, is sometimes termed cal- 

 ceolate. 



Fig. 474. Personate corolla of Snapdragon {Antir- 

 rhinum). I. Lower lip. u. Upper lip. h. Gibbous 

 base Fig. 47.5. Personate corolla of tlie Toad- 

 flax {Linaria) spurred at its base. 



