118 



THE FIKST BOOK OF BOTANY. 



EXEKCISE L. 

 Crowns, Spurs, and Nectaries. 



FIG. 228. 



FIG. 229. 



The CORONA, or GROWN, is a scale-like structure 

 (Fig. 228) on the inner surface of corollas, at the 

 summit of the claw, or tube. 



A SPUR is a tubular prolongation of a petal or 

 sepal. Fig. 229. 



FIG. 230. 



FIG. 231. 



Nectary. 



Nectary. 



A NECTARY is a little gland on the claw of a 

 petal that secretes a sugary liquid. In Fig. 230 

 these glands are naked, while in Fig. 231 the little 

 gland is covered by a scale. 



