600 POACE^. 



17. F. parviflora Ell. Bot. S. C. & Ga. 1: 170 (1816). 



A slender glabrous perennial. Culms geniculate, 30-60 cm. 

 high. Leaves of the culm 4-5 in number, sheaths about the length 

 of the internodes ; ligule a ciliate fringe, subauriculate ; blades invo- 

 lute-filiform, scabrous above, 6-12 cm. long, 0.2-0.6 mm. diam. 

 Panicle scarcely exserted, narrow, 8-16 cm. long, rays mostly in pairs, 

 the lowest internode of panicle 4-5 cm. long, longest ray 5-8 cm. 

 long, bearing 4-7 spikelets on the outer half. Spikelets 4-5- 

 flowered, about 6 mm. long; empty glumes lanceolate, even when 

 spread, first 1-nerved, 4 mm. long, second 3-nerved, 5 or more mm. 

 long; floral glume 5-nerved. 5-6 mm. long, lanceolate when spread, 

 awn 4-6 mm. long; palea acuminate. 5.5 mm. long. Anthers 1.2 

 mm. long. Ovary glabrous, stigmas linear. 



Texas, NeaUey in 1890 for U. S. Dept. Agricul. 



There is some uncertainty about the correct identification of 

 this grass, though the plant answers well to Elliott's description. 



South Carolina to Texas. 



18. F. Hystrix Boiss. Elench. 89 (1838). F. diiriuscula var. 

 Hystrix Boiss. Voy. Esp. 2: 671 (1845). F. indigesta var. Hystrix 

 Willd. Prod. El. Hisp. 94 (1870). 



Culms slender, erect, 8-30 cm. high, the upper node 4-6 

 cm. from the roots and concealed. Ligule biauriculate, 1-2 

 mm. long, blades of sterile shoots ascending, curved, 4-6 cm. 

 long, terete, smooth; those of the culm 1-3 cm. long, 3- 

 nerved, setaceous, rigid, curved. Panicle 1-4 cm. long, dense, 

 linear, simple, rachis scabrous. Spikelets iiedicellate, lanceolate, 

 3-5-flowered, the longest 7 mm. long; empty glumes unequal, acute, 

 dark violet, second lanceolate reaching to the middle of the floral 

 glume next above; floral glume 4 mm. long, lanceolate, acute, sub- 

 carinate below tlie apex, smooth, nerves obscure, green or light- 

 colored near the apex, margins scarious, the awn short; jialea ob- 

 long-lanceolate, acute, 2-toothcd, ciliate on the keels. Anthers 2. 

 mm. long. Ovary obovate-oblong, glabrous. 



Michigan, (Hancock,) F. E. Wood. 



Probably introduced from Europe. The description answers 



