84 Bulletin V. 



Fig. 39. Pennisetum iyphoideicm, Rich. — Pearl Millet. ^, upper 

 part of culm, showing the cylindrical spike-like panicle and 

 uppermost lanceolate leaf. B, a couple of spikelets, surrounded by- 

 numerous ciliated bristles. These fall with the spikelets. 



Fig. 40. Panicum sanguinale L. — Crab-grass: A, upper portion 

 of a single stem and inflorescence. This last consists, of several 

 slender one-sided racemes crowded at the end of the stalk, a, a 

 single spikelet, showing the first and third glumes, b, the same 

 seen from the other side, showing the second glume, which is- 

 about one-half the length of the smooth flowering glum'e which it 

 partly covers. 



