64 



COROLLA. 



The individual leaves of which the corolla is composed are 

 called petals, and if the petals are united by their margins, 

 forming a tube, the corolla is said to be monopetalous or gamo* 

 petalous ; if they are distinct, it is called polypetalous. The 

 orifice of the tube is called the throat. 



The forms assumed by gamopetalous corollas are various, 

 and have received characteristic names, the principal of which 

 are the following : 



1. Rotate, having a very short tube, with a spreading limb, 

 as exhibited in Fig. 95. 



Fig. 97. 



Fig. 96. 



Fig. 95. 



V 



Rotate corolla. 



Funnel-shaped corolla. 



2. Hypocrateriform, salver-shaped, with a border like the 

 preceding, but with a long tube. (Fig. 96.) 



3. Infundibuliform (Fig. 97), or funnel-shaped, having a 

 regularly expanding tube, as in the Convolvulus. 



4. Campanulate (Fig. 98), with the tube swelling at the 

 base, and then gradually expanding into a limb. 



5. Labiate. When the corolla is separated into two unequal 

 divisions, called the anterior, or lower, and posterior, or upper 



Fig. 98. 



Fig. 99. 



Fig. 100. 



Campari ulated corolla. 



Ringent corolla. 



Personate corolla. 



What is each leaf of the corolla called? When called monopetalous 1 

 When polypetalous ? What is a rotate corolla? Hypocrateriform? Fun- 

 nel-shaped? Campanulate? Labiate? 



