W182 



WESTERN TANSYMUSTARD 



So'phia inci'sa, syn. Sisym' brium inci'sum 



Flowers minute, yellow, in elongating 

 end clusters (racemes) 



Petals 4, spreading in crosslike (cru- 

 ciform) arrangement, attached below 

 seed-producing organ (ovary) 



Stamens 6, 2 of them 

 shorter than other 4 



Outer flower .parts (sepals) 4, thin, 

 yellowish, falling early 



T 



Le_aves alternate, green, more or less 

 hairy, finely divided; divisions oblong 

 and deeply toothed or narrow and with 

 entire margins 



Stems solitary, usually branched, up 

 to 4 ft. high, nearly hairless to hairy; 

 hairs star-shaped or often gland-tipped 



Seed pods (siliques) about K in. long, 

 narrow, slightly curved, erect on short, 

 slender, spreading stalks, 2-celled, the 

 cells separated by a transparent mem- 

 brane, splitting when ripe 



Seeds minute, usually in 1 row in each 

 cell 



Taproot rather slender, annual 



