COROLLA. 



65 



lips (Fig. 99), as in the Mint. When the throat is open, it is 

 said to be ringent. (Fig. 99.) The personate corolla differs 

 from the ringent in having the throat closed by a projection 

 of the lower lip. (Fig. 100.) 



6. Urceolate or pitcher-shaped, the same as campanulate, but 

 with the orifice contracted and an erect limb. (Fig. 101). 



107. In polypetalous corollas each petal consists of a limb or 

 lamina, and an unguis or claw. The claw is the narrow part of 

 the petal by which it is attached to its support, and corres- 

 ponds to that part in the monopetalous corolla which forms the 

 tube, and is the petiole of the leaf. The limb is the dilated 

 portion of the petal supported by the claw, and is the lamina 

 of the leaf. The claw is not always present : when it is pres- 

 ent, the petal is said to be unguiculate. 



Urceolate 

 corolla. 



Fig. 102. 



Fig. 103. 



Liliaceous corolla. 



Rosaceous corolla. 



108# The terms applied to the different forms of the poly- 

 petalous corolla are : 



1. Rosaceous, when there are several spreading petals with- 

 out claws, as in the Rose or Apple. (Fig. 103.) 



2. Liliaceous, when the petals stand side by side with the 

 claw, gradually expanding into a limb. (Fig. 102.) 



3. Caryophyllous, with long slender claws protected by a 

 tubular calyx with an expanding limb, as in the Pink. (Fig. 

 104.) When the claws are short, the flowers are called alsi- 

 naceous. 



4. Cruciform are such as consist of four petals arranged op- 

 posite, or at right angles to each other, as the Turnip, Cabbage, 

 <fcc. (Fig. 105.) 



5. Papilionaceous consist of five petals, of which the upper 

 is erect, more dilated than the others, and is called the- vexillum 

 (Fig. 106, a) ; the two lateral are at right angles with the vex- 



Personate? Urceolate? — 107. Of -what does each petal consist? 

 What is the claw? Limb? — 108. What is a rosaceous corolla? Lilia- 

 ceous ? Caryophyllous ? Alsiuaceous ? Cruciform ? Papilionaceous ? 



