HOTAKY FOR BKGFNNEKo. [Ch. -X.I11 



Fig. 51. 



300. The Crown imperial, Frit ill aria 

 Imperialis^ exhibits in the ciaw of each 

 of its petals, a cavity called a nectary, 

 each one is always filled with a sweet 

 liquid. If these drops are removed, 

 others immediately take their place. You 

 have here a representation (Fig. 51,) of 

 this flower ; its petals appear as if cut off, 

 in order to show the six nectariferous 

 glands at the base of each. 



201. In the Ranunculus, the nectary 

 is a production of the corolla, in the form 

 of a scale : in the violet a process of the 

 .ame, in the form of a horn or spur. In the Columbine, the 

 nectary is a separate organ from the petals in the form of a 

 horn. In the Monks-hood, one of the petals, being concave ; 

 conceah the nectaries ; they are therefore said to be hooded. 



CHAPTER XIIL 



Stamens and Pistils. 



302. The stamens and pistils in most plants are enclosed oy 

 the same envelope, or stand upon the same receptacle ; in the 

 class Monoecia they are on different tiowers which spring from 

 one common root; ami in Dicecia, they are on different flowers 

 springing from different roots. Yet, however distant the sta- 

 mens and pistils may be, nature has provided ways by which 

 the pollen from the staminate flowers is conveyed to the pistil- 

 late, to assist in perfecting the seed. That you may be better 

 understand this curious process, and the organs by means ol 

 which it is carried on, we will examine each one separately. 



Stamens. 



303. Stamens are thread-like parts, exterior as to the pistil, 

 aivl interior as to the corolla. They exhibit a variety of posi 

 tions, some being inserted upon the pistil, seme below it, tinJ 

 others around it. 



300. What is said of the nectaries of the Crown imperial 1 



301. What are some of the other forms in which nectaries appear? 



302. Are the stamens and pistils always upon the same flowers 1 



303. How are stamens situated with respect to the pistil and 

 corolla? 



