74 



VARIETIES OF COROLLA. 



Cyathiform, or cup-shaped (fig. 87). (Cyathiform, 

 from the Latin, cyatkus, a drinking-cup.) It differs from 

 the infundibular corolla in having its tube, and of course 

 its border, less spreading; and from the campanulate, 

 in not having its tube appear as if scooped out at the 

 base. 



CYATHIFORM. 



Hypocrate'riform, or salver-shaped, when the 

 tube is long, and expanded into a flat limb at the 

 throat or entrance into the corolla, as in the prim- 

 rose. 



(Hypocrate'riform : from the Greek, upo t under, 

 krater, cup, and phorme, shape. Salver-shaped.) 

 The form of a corolla consisting of a tube, sud- 

 denly expanded into a flat border. ( Fig. 88 : c, 

 corolla ; d, the calyx.) 



d 



Fig. 88. 



PRIMROSE. 



Rotate, or wheel-shaped, when the tube is 

 very short, and the limb expanded and almost 

 flat. 



Urceolate, or pitcher-shaped, when it is di- 

 lated towards the base, and contracted towards 

 the orifice, as in several heaths, &c. Fig. 89 

 represents an urceolate, monopetalous corolla : 

 a, the calyx; b, tube of the corolla ; c, the 

 limb of the corolla ; d, the pistil. 



Scu'tellate, or porringer-shaped, when it is 

 expanded and slightly concave, like a basin. 



The following are the principal forms of 



Fig. 89. 



URCEOLATE. 



Fig. 90. 

 BILABIATE. 



IRREGULAR MONOPETALOUS COROLLAS. 



32. Bilabiate, when it is more or less elongated, 

 dilated, and open towards the top, and terminated by 

 two lips, one superior and the other inferior (Jig. 

 90). 



Personate, or in form of a mask, when 

 the tube is elongated and the throat di- 

 lated and closed above by the approxima- 

 tion of the limb, which consists of two 

 unequal lips (Jig. 91). 



Anomalous, when its form is so irregu- 

 lar that it cannot be referred to any of 

 the ordinary types. 



32. What is a bilabiate corolla ? When is a corolla personate ? When 



