PLATE 6 



I. — Black stripes on glumes, awns, and raehis. Rhome, Tex., 1917. No. 171. 

 Bacteria present. 



2. — Spikelets aborted and blackened, awns twisted, rachis badly diseased (black- 

 ened or water-soaked in appearance and oozing bacteria). Farmington, Ark., 1917. 

 No. 153. 



