350 



EXPERIMENT STATION BULLETIN. 



Fig. 99 (91). 



Apetalous Pepper-grass. Lepidium apcta- 

 lum Willd. Animal or winter annual, more or 

 less hoary, racemes properly branched, lower 

 leaves pinnatifid; petals wanting, or only two 

 minute, and white; pod flat, more or less 

 circular. 



Waste places, seldom causing much trouble; 

 when ripe becoming a tumble weed. 



Fig. 100 (92). 



Field Pepper-grass. Cow Cress. Lepidium 

 campestre (L.) R. Br. A diffuse, hoary- 

 pubescent biennial, 10-30 cm. high; stem 

 leaves sessile with an arrow-shaped base; 

 flowers white or yellowish; pods flattened, 

 more or less circular. 



Fields and w r aste places, naturalized from 

 Europe. 



