DESCRIPTIVE MANUAL 



101 



Fig. 57. Winged Pigweed (Cydoloma atriplicifolium) . Seed and cross section of 



ovary. 

 (After W. J. Beal, Mich. Agr. Exp. Sta.) 



Mexican Fireweed (Kochia scoparia Schrad.). 



Description. — An annual, erect, puberulent or glabrate herb; 

 leaves lanceolate to linear, ciliate acuminate ; flowers sessile in the 

 axils of the upper leaves, forming short dense-bracted spikes ; fruit- 

 ing calyx segments each with a short triangular horizontal wing. 



