221 



Fig. 215. LEPTOCHLOA SCABRA Nees, Agrost. Bras. 435. 1829. (i. lang- 

 loisii Vasey, Bui. Torr. Bot. Club, 12:7. 188.5.) ROUGH LEPTOCHLOA.— A 

 .'<tout annual 6-12 dm. (2°-4°) high, with flat leaves and very many, crowded, 

 slender spikes in terminal panicles 3 dm. (1°) long. Sheaths loose;' leaf-blades 

 about 3 dm. (1°) long, 6-8 mm. (3"-l") wide, somewhat .scabrous. Spikelets 

 («, b) loosely imbricate, 3 to 4 flowered, 4 mm. (2") long; empty glumes 

 unequal, ovate, acute, .scabrous on the keel, the first about 1 mm. (V') long, 

 the second 2 mm. (l")long; flowering glumes (c) mucronate, 3-nerved, slightly 

 pubescent on the keel, ciliate on the lateral nerves below. Palea slightly 

 shorter than the glume, 2-toothed.— Ditches and fields, Louisiana. (Brazil.) 

 September. 



