COROLLA. 



25 



146. A polypetalous corolla may be regular or irre- 

 Fig. 22. gular, the petals of which it is composed 

 are divided each into two parts ; the un- 

 guis or claw (a), the lamina or limb (b), the 

 former of which is not always very evident. 

 147. Of the polypetalous regular corolla 

 we may have the Caryophyllaceous (a), 

 Cruciferous (V), Rosaceous (c). 

 Fig. 23. 



148. Of the irregular The Papilionaceous. This has 



Fig. 24. 



five petals, the vexillum or standard 

 (a) ; the alse or wings (b V), and the 

 carina or keel of two pieces (c). 



149. There are some other forms 

 of the irregular polypetalous corolla, 

 as seen for instance in the Monks- 

 hood ; but these cannot be well re- 

 duced to any particular order. 

 150. There are certain structures often seen con- 

 nected to the corolla, called appendages of it, and to 

 which Linnaeus applied the term nectaria, such as the 

 corona of the Narcissus (a), foliaceous scales at (b). 



Fig. 25. 



