OR, MANUAI, OF THB APIARY. 



393 



RSAI, HONBY-DBW. 



Many plants, like the cotton and cow-pea (Fig. 199) of the 

 South, have extra floral-glands which secrete nectar. In case 

 of the cow-pea these glands are on the peduncles or flower- 



FiG. 199. 



«, a Glands. 



Cow-Pea — Origina I. 

 b Flower. 



c Pods. 



stems, just at the base of the flowers (Fig. 199, a, a). Prof. 

 Trelese thinks that this nectar serves the plant by attracting 

 bees, wasps, etc., which keep injurious insects from attacking 



