Forms of Corolla 



109 



as in the Campanula (fig. 183); urceolate or urn-shaped, as in 

 the Bilberry (fig. 184); globose, as in many Heaths (fig. 185); 

 infundibuliform or funnel-shaped, as in the Convolvulus (fig. 

 186); hypocrateriform or salver- shaped, with the petals flat- 

 tened above, as in the Jasmine (fig. 187); rotate or wheel- 

 shaped, as in the Borage (fig. 188) ; cruciform or cross-shaped, 

 when there are four petals arranged like a Maltese cross, as in 

 the Wallflower, Stock, or Lunaria (fig. 189); ligulate or strap- 

 shaped, when the lower part of the corolla forms a tube and 

 the upper part is flattened out, as in the Globularia (fig. igo), 

 and the ray florets of the Daisy and florets of the Dande- 

 lion ; spurred, as in the Violet and many Orchids ; bilabiate 



Fig. 193. —Papilionaceous corolla of Laburnum- I- Seen laterally. II. In front. III. 

 Standard. IV. Left wing seen from without. V. Keel. 



or two-lipped, as in the Dead-nettle (fig. 191). Of this there 

 are two forms : if the lips are wide apart, as in the Dead-nettle, 

 it is ringent ; if closed, as in the Snapdragon (fig. 192), it is 

 personate ; papilionaceous or butterfly-shaped, as in the La- 

 burnum and other members of the Pea-flower tribe (fig. 193). 

 In this case there are five petals, one overlooking the rest, the 

 standard ox vexilium {fig. 193, in.); onestandingouton each side, 

 the wings or ales (fig. 193, iv.) ; and two united surrounding the 

 stamens, the keel ox carina (fig. 193, v.). 



In some cases, as in many of the Orchids, there is a most 

 irregular shape of corolla which has received no special name. 

 The term caryophyllaceous is applied to the corolla as it is met 

 with in the Pink tribe (figs. 194 and 195), when there are five 



