376 



Bulletin No. 205 



[March, 



Sheaths pubescent; spikelets minute, usually 1.5 to 2 mm. long; the first floret 

 not longer than the second glume. L. filiformis 



Sheaths smooth, spikelets 2.5 to 8 mm. long; first floret always longer than the 

 second glume, which is about 3 mm. L. fascicularis 



Leptochloa fascicularis (Lam.) Gray 

 (Fig. 205) 



Festuca poli/stacluia, Michaux '03, 66. Leptochloa fascicularis, Lapham '57, 

 546, 573; Patterson '76, 50; Flagg '78, 281. Diplachne fascicularis, Brendel '87, 

 88. 



Culms in tufts, smooth, 8 to 24 inches tall, occasionally taller; 

 sheaths smooth ; blades 3 to 10 inches long, 2 to 10 mm. wide ; spikes 

 3 to 5 inches long, the whole inflorescence 6 to 20 inches long ; spikelets 

 7- to 11-flowered, with very short stalks, glumes unequal, the second 

 about 3 mm*, long ; lemmas short awned, about 4 mm. long, ciliate on 

 the margin near the base. 



Michaux first found this plant in Illinois. It grows on wet prairie 



soil, along ditches, and in damp meadows. 



ILLINOIS SPECIMENS: Southern Illinois, Brendel; ponds in Illinois near St. 

 Louis, Smith; near Cahokia Mound, Ward, Aug., 1878. macoupin CO. Carlinville, 

 Boiertson, July, 1882. ST. clair co. Without locality, Brendel in 1850; Mas- 

 coutah, Welsch. wabash co. Without locality, Schnech, July, 1880; near L. E. 

 and St. L. railway, SchnecTc, June, 1900. 



203\ 204 20^ 



Figs. 203-207.— 203, L. filiformis, inflorescence; 204, L. filiformis, spikelet; 

 205, L. fascicularis, spikelet; 206, P. communis, inflorescence; 207, P. communis, 

 spikelet 



