THE MORNING GLORY OR CONVOLVULUS FAMILY 121 



the basal scar is a roughly lined, reddish depression at the 

 lower pointed end. Germ much folded and crumpled inside 

 the seed. 



Time of flowering: From June throughout the summer; 

 seeds ripe by August. 



Propagation : By seeds and running rootstocks, every portion 

 of which will produce a new plant if broken up by the plow. 

 In many localities, as at Ottawa, this plant produces few seeds. 

 It has, however, everywhere a most persistent habit of growth. 



Occurrence : Although widespread throughout the Dominion 

 and in restricted localities very troublesome, Field Bindweed, 

 fortunately, can not as yet be called a common weed of Canada. 



Injury: Exceedingly hard to eradicate, from its almost 

 incredible persistence, owing to the vitality of the fleshy root- 

 stocks. 



Remedy: A short rotation of crops should be practiced, 

 including late sown roots or other cultivated crops; rape is 

 useful for this purpose. Frequent use of a broad-shared cultivator 

 will destroy new growths and exhaust the vitality of the plants. 

 Sow no crop seeds containing those of Field Bindweed. 

 Applications of salt or lime, sometimes recommended to kill this 

 weed, are useless unless applied in large quantities. 



ALLIED SPECIES: Upright Bindweed (Convolvulus spith- 

 amaeus L.) is occasionally complained of in sandy land. Hedge 

 or Great Bindweed (Convolvulus sepium L. and varieties) some- 

 times give trouble for a year or two after land is broken in the 

 Prairie Provinces. 



Convolvulus will next in boundless Stores, 

 Cloath the moist vale with yet unfinish'd Flow'rs; 

 These rude Essays were first for Lilly's meant, 

 When Nature on a nobler work intent, 

 First took the pencil and began to paint. 



Rapin, 1650. 



