20 



1007 Ball 1897. Kansas: Riley, 576 Norton 1895; Syracuse, 129 Thompson 1893; 

 Hooker Co., 1568 Rydberg 1893; Wiegand, 2684 Clements 1893; Central City, 

 262 Shear 1895, 2009 Rydberg 1895; Kearney, Holmes 1889. Wisconsin: Osh- 

 kosh. Random 1896; Newbold, 1701 Cheney 1893. South Dakota: Aberdeen, 123 

 Griffiths 1896; Redfield, 208 Griffiths 1897. Missouri: St. Louis, 268 Eggert. 

 Colorado: Thomas 1869, 510 Jones 1878; Colorado Springs, 2158 Williams 1896; 

 Glenwood Springs, 1304 Shear & Bessey 1898. Utah: 6034 Jones 1894; Caine- 

 ville, 5696& Jones 1894. Oregon : Milton, 33 Brown 1896. North Carolina : Mag- 

 netic City, 9 Wetherby 1895. Alabama : Tuskegee, 15 Carver 1897. Mississippi : 



Ocean Springs, 1 Forkertl898. 

 Texas: KerrNdlle, Nealley 

 1899, Heller 1894. Neiv 

 Mexico: Mesilla, 89 Wooton 

 1897. Arizona: Verde Valley, 

 532 McDougal 1891. Mexico: 

 349 Liebmann 1841-1843. 

 10. Chsetocliloa italica (Ju.), 

 Scribn. U. S. Dept. Agr., Div. 

 Agros. Bui. 4: 39 (1897). 

 Panicum italicum L. Sp., Pi. 

 56 (1753) . Setaria italica 

 Beauv. Agrost. 51 (1812) 

 Cham^eraphis italica Kuntze 

 Rev. Gen. PI. 2: 768 (1891). 

 Ixophorus italicus Nash Bul. 

 Torr. Bot. Club 22: 423 

 (1895). (Fig. 9.) 

 A stout, erect, somewhat glaucous 

 annual, Avith broad leaves and 

 large, dense, comi>ound, spici- 

 form panicles 8 to 20 cm. in 

 length. Culms simple or 

 branching at the base, 3 to 8 

 mm. in diameter below, gla- 

 brous or slightly scabrous 

 below the nodes and panicle; 

 nodes bearded with short 

 appressed hairs; sheaths 

 loose, striate, glabrous or 

 somewhat scabrous, subcom- 

 pressed, generally exceeding 

 the internodes, ciliate on the 

 margins; ligule short, densely 

 ciliate-f ringed with white 

 hairs 2 to 3 mm. long; leaf- 

 blades lanceolate, narrowed at the base, long-acuminate, 2 to 4 dm. long, 1.5 to 

 3 cm. wide, scabrous on l)oth sides, serrulate-scabrous on the cartilaginous margins. 

 Panicles dense, cylindrical, green, l^ecoming yellow at maturity, 2 to 3 cm. in 

 diameter, obtuse or truncate at both ends, sometimes interrupted below; rachis 

 densely villous, branches 1 to 2 cm. long, contiguous, densely flowered; seta' 1 to 

 3, green or purplish, 3 to 10 nun. long, often shorter than the spikelets or nearly 

 obsolete, antrorsely scabrous. Spikelets elliptical, strongly convex, 2.5"to 3 mm. 

 long, obtuse; first glume one-fourth to one-half as long as the spikelet, acute, 1 

 to 3 nerved; second and third glumes about equaling the flowering glume, 5 to 



. ^.—Chcetochlna italica: a, b, views of the spikelets, show 

 ing the setaj ; c, flowering glume, dorsal view. 



