334 



Bulletin No. 205 



[March, 



face but not pubescent, 4 to 8 mm. wide; cnlm blades, if present, less 

 than an inch long; spikelets 6 to 8 mm. long, the awn 5 to 10 mm. 

 long ; lemma not turning black when the fruit is ripe. 



This species is found on wooded hillsides or in pastures, especially 

 in damp situations. After the fruit is ripe, the leaves usually spread 

 out flat on the ground, while the culms remain erect. 



COOK CO. Without locality, Shipman in 1877. 



120 



124 



Figs. 118-124. — 118, M. effusum, panicle; 119, M. effusum, spikelet; 120, 

 0. asperifolia, inflorescence; 121, 0. asperifolia, spikelet; 122, 0. racemosa, 

 spikelet; 123, 0. pungens, spikelet; 124, S. spartca, spikelet, (a) glume, (b) 

 lemma, (c) callus 



Oryzopsis pungens (Torr.) Hitch.c. 

 Slender Mountain Rice (Fig. 123) 



Oryzopsis canadensis, Lapham '57, 545; Flagg '78, 280. 



Culms in thick tufts, 6 to 30 inches tall ; the leaves crowded at the 

 base and nearly as long as the culm ; sheaths usually smooth ; blades 

 narrow and involute; culm leaves, if any, very short; spikelets 3 to 

 4 mm. long, the awn very short or w^anting. 



This species is found in dry, usually rocky soil. 



ILLINOIS specimens: Without locality. Kail. ST. glair co. Mascoutah, 

 Welscli. 



Oryzopsis racemosa (Sm.) Ricker 



Black-fruited Mountain Rice (Fig. 122) 



Oryzopsis melanocarpa, Patterson '76, 50; Flagg '78, 280; Brendel '87, 63. 

 Culms erect, simple, 2 to 4 feet tall, the leaves not crowded at the 

 base ; sheaths usually smooth, blades flat, 4 to 12 inches long, 4 to 15 



