THE GRASS TRIBE 349 



4. L. lemidenlum (Darnel). Always annual ; rootstock not creep- 

 ing ; outer glumes usually as long as the spikelets ; flowering glumes 

 shorter and broader than in L. ferenne, and some of them have an 

 awn longer than themselves. The grain of this grass is poisonous, 

 causing, when eaten repeatedly in small quantities, a disease called 

 dry gangrene, similar to that produced by the ergot of rye. Culti- 

 vated fields, sometimes growing with wheat ; not common. Fl. 

 Tune to August. Annual. 



