318 



EXPERIMENT STATION BULLETIN. 



Fig. 47 (46). 1 



Pigweed. Lamb's Quarters. Chenopo- 

 dium album L. Annual, pale green, branching 

 much, 30-300 cm. high; leaves varying from 

 rhombic-ovate to lanceolate, the lower more ot 

 less sinuate-lobed or toothed; flower clusters 

 dense, simple or compound. Introduced from 

 Europe and widely distributed in North Am- 

 erica. One of our commonest weedstevery- 

 where in annual crops. A variety, viride is 

 bright green, le^s mealy and has less dense 

 inflorescence, found with the above. 



Fig. 48 (47). 



Mexican Tea. Chenopodium ambrosioides 

 L. A smooth or slightly glandular, not mealy, 

 strong-scented, leafy annual, 60-90 cm. high; 

 leaves with short stems, oblong-lanceolate, 

 entire or wavy-toothed, spikes leafy, densely 

 flowered. Naturalized from tropical America 

 and widely distributed. Not prominent in 

 Michigan. 



