i68 



WEEDS OF THE FARM AND GARDEN 



the Missouri River, and also eastward around the great 

 lakes. Plant grows in spherical form and at maturity 

 separates from the roots close to the surface of the 

 ground. A well-known western tumbleweed. 



Kochia or Mexican Fireweed (Kochia scoparia, (L.) 

 Schrad.). An annual, erect, puberulent or glabrate herb; 

 leaves lanceolate to linear, ciliate; flowers sessile in the 

 axils of the upper leaves forming short, dense, bracted 



spikes; fruiting calyx 

 segments each with a 

 short triangular hori- 

 zontal wing. In waste 

 places commonly cul- 

 tivated and now a fre- 

 quent escape especial- 

 ly in the West. 



Mexican Tea (Chen- 

 opodium ambrosioides, 

 L.). A smoothish 

 aromatic annual; 

 leaves short petioled, 

 oblong or lanceolate, 

 repand toothed or 

 nearly entire ; spikes 

 densely fl o w e r e d, 

 Fig-. .102. Winged pigweed (Cycloma leafy . fruit i nc l ose d 

 atripliafolium). 



in the calyx. Com- 

 mon especially southward in waste places, streets, and 

 roadsides. 



Fremont's Goosefoot (Chenopodium Fremontii, S. 

 Wat.). A light green annual with erect branched stems; 

 leaves thin, broadly triangular, hastate, sinuate dentate ; 

 the upper entire, base truncate or narrowed, petioled ; 

 spikes, slender divisions of perianth nearly inclosing the 

 utricle; seed shining. Common from South Dakota to 

 Colorado, Utah, New Mexico, and Nevada to Montana. 



