THE COROLLA. 



277 



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



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



the four unguiculate petals, diverging equally from one anotlier, 



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



(Fig. 405). Among 



the irregular polypeta- 



lous flowers, which are 



extremely varied in 



different families, the 



papilionaceous or hut- 



terjly-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 

 ai'e likewise divided into the regular, Avhere 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 enlarges gradually and regularly from the base to the summit ; 



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

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

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

 somewhat cylindi-ical throughout, as in Trumpet Honeysuckle ; hi/jio- 

 crateriform (more correctly hypocraterimorphous), or salver-shaped, 



FIG. 453. Rotate or wheel-shaped and five-parted corolla of the Bittersweet (Solanum 

 Dulcamara). 



FIG. 454. Wheel-shaped and five-cleft corolla of the common Totato. 



FIG. 455. The almost entire and open bell-shaped corolla of a Ground Cherry (Physalis). 



FIG. 456. 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 Linaria, spurred at the base. 



24 



