THE COROLLA. 



277 



claws, which are enclosed in the tube of the calyx ; and the cruciate, 



or cruciform, which gives its name to the Mustard family, where 



the four unguiculate petals, diverging equally from one another, 



are necessarily disposed in the form of a cross, as m the "Mustai'd 



(Fig. 405). Among 



the irregular polypeta- 



lous flowers, which are 



extremely varied in 



different families, the 



papilionaceous or hut- 



terfly-shaped corolla of the Pulse family is the most familiar, and 



has already been illustrated (471, Fig. 392). 



510. Several forms of the gamopetalous corolla, or gamophyl- 

 lous calyx, have been distinguished by particular names. These 

 are likewise divided into the regular, where their parts are equal in 

 size, or equally united ; and the irregular, where their size or de- 

 gree of union is unequal (471). Among the foi-mer are the cam- 

 panulate or hell-shaped, as the corolla of the Harebell (Fig. 456), 

 which enlai-ges gradually and regularly from the base to the summit ; 



the infundihuliform, ov funnel-shaped, where the tube enlarges very 

 gradually below, but expands widely at the summit, as in the corolla 

 of Morning-Glory (Fig. 1035 and 452) ; tubular, where the form is 

 somewhat cylindi-ical throughout, as in Trumpet Honeysuckle ; hypo- 

 crateriform (more coiTCCtly hypocraterimorphous), or salver-shaped. 



FIG. 463. 

 Dulcamara). 

 riG. 434. 

 FIG. 455. 

 riG. 456. 



Eotate or wheel-shaped and five-parted corolla of the Bittersweet (Solanum 



Wheel-shaped and five-cleffc corolla of the common Potato. 



The almost entire and open bell-shaped corolla of a Ground Cherry (PhysaUs). 



Campanulate corolla of the Harebell, Campanula rotundifolia. 457. Salver- 

 shaped corolla of Phlox. 458. Labiate (ringent) corolla of Lamium ; a side view. 459. Per- 

 sonate corolla of Antirrhinum. 460. Personate corolla of Liuaria, spurred at the base. 



24 



