COROLLA. NECTARY. 13 



The petals of a papilionaceous Corolla are 

 thus named : the Banner, fig. 5 ; the Wings, 6 ; the 

 Keel, 7. 



Each petal of a polypetallous Corolla consists 

 of two parts ; the Claw, fig. 5, « and the Plate or 

 upper and expanded portion of the petal. ^ 



The Corolla either falls off immediately on its 

 expansion, or with the stamens and pistils. 



To the Corolla is frequently attached an organ 

 termed the Nectary. 



The Nectary is that part of the flower which 

 retains or secretes the honey. Scarcely any flower 

 can be found without more or less honey ; though 

 its secretion is not universally produced by an 

 organ distinct from the petals. 



In monopetallous flowers, the tube of the 

 Corolla contains and probably secretes the honey 

 without any evident nectary, as in the Dead-nettle. 

 Sometimes it is an elongation of the Corolla, as in 

 the Violet, fig. 1, pi. 10, and Snap-dragon, fig. 2 ; 

 and sometimes distinct, as in Columbine (Aquile- 

 gia) fig. 3. « It crowns the Corolla in Narcissus, 

 fig. 4 ; is attached to the claw of the petal in 

 Ranunculus, fig. 5, « and to the receptacle in House- 

 leek, (Sempervivum.) 



