124 



AMERICAN HONEY PLANTS 



early summer. It is reported as yielding nectar abundantly, though not 

 often as a source of surplus. 



Fig. 74. Hoarhound. 



HERON'S BILL, see Pin Clover. 

 HETEROMELES, see Christmas Berry. 



HICKORY (Hicoria). 



The hickories are an important group of forest trees of wide distri- 

 bution. They are of special interest to the beekeepers as sources of large 

 amounts of honeydew from aphis, which are frequenty to be found on 

 the leaves. These trees are important for pollen, also, in many localities. 



HIMALAYA BERRY, see Blackberry. 



HOARHOUND (Marrubium vulgare). 



Hoarhound (Fig. 74) is a well-known plant, introduced from Europe, 

 which has become naturalized from Canada south to the Gulf of Mexico. 

 The plant is perennial, flowering from July to September. It occurs in 



