MICHIGAN WEEDS. 



325 



Fig. 59 (56). 



Tumble Weed. Amaranthus graecizans L. 

 (A. albus L.) A smooth, pale green, bushy, 

 branched annual, 30-60 cm. high; leaves oblong 

 or spatulate, 0.5-1.5 cm. long; bracts awishaped. 

 Naturalized from tropical America, and widely 

 distributed in North America. Sandy and 

 gravelly, well drained soil, becoming when 

 mature a model tumble weed. 



Fig. 60 (57). 



Green Amaranthus. Rough Pigweed. 



Amaranthus hybridus L. (A. chlorostachys 

 Willd.) Usually slender, erect, dark green, 

 nearly smooth, annual, 60-240 cm. high; leaves 

 bright green both sides; spikes slender-cylin- 

 drical, bracts rather long. Cultivated grounds. 

 Common east, but scarce in Michigan. In- 

 troduced from tropical America. 



