POISONOUS AND INJURIOUS PLANTS 123 
Chemical contro] measures are recommended for larger trees or thick 
stands as the stumps form regrowth following cutting. Any practice 
to prevent the production of seeds, such as pruning the tree at regular 
intervals, would aid in preventing the spread of the plants, and would 
lessen the danger to animals. 
Nyctaginaceae, or Four O’clock, Family 
Mirabilis jalapa L. (fig. 40) 
Four O’clock 
BN-—13178 
FicureE 40.—Four O'clock (Mirabilis jalapa L.) 
