10 



Specimexs examined.— 0«a?wf; Macoun 1884. Maine: Rumford, Parlin 1889; 

 Auburn, Merrill 1898. New Hampshire: Jaffrey, 284 Robinson 1897. Massachu- 

 setts: Great Barrington, Pollard 1894; South Hadley, Clark 1887. Connecticut: 

 South Glastonbury, 25 Wilson 1892. New York: Oxford, Coville 1884; New- 

 York, Kenyon 1889. New Jersey: Weehawken, Van Sickle 1895. Pennsylvania: 

 Conewago, Small; Philadelphia, Smith; Easton, Porter 1896. Delaware: 146 

 Commons 1897. District of Columbia: Vasey 1885. Ohio: Ricksecker 1894. 

 Michigan: Keweenaw Co., 537 Farwell 1886. Tennessee: Knoxville, Scribner. 

 loiua: Fayette Co., Fink 1894; Ames, 180 Ball 1896. Kansas: Manhattan, Bass- 

 ler, 1883; Riley Co., 575 Norton 1895. Missouri: 266 Eggert 1886. Wisconsin: 

 Oshkosh, Random 1896. South Dakota: Bellefourche, 366 Griffiths 1897; Red- 

 field, 221 Griffiths 1897; Frankfort, 54 Griffiths 1897. North Carolina: Magnetic, 

 City, Wetherby 1895. ^fe6«mo.- McCarthy 1888. Louisiana: Ascension, 1409 

 Combs 1898; Rayville, 23a Ball 1898; Calhoun, 44 Ball 1898; Shreveport, 97 Ball 



1898. 



**Perennial. 



2. Chaetochloa imberbis (Poir.) Scribn. ; U. S. Dept. Agr., Div. Agros. Bui. 4: 37 



(1897). Pamcw?HMnfea-&e Poir. Encycl. Suppl. 4: 272(1817). Panicum. Isevigatum 

 Muhl. in Elliott Sk. Bot. S. Car. & Ga. 1: 112 (1817). Clurtorhloa larigata 

 Scribn. Chictochloa jjerennis (Curtiss) Bicknell Bui. Torr. Bot. Club 25 : 107 (1898) . 

 An erect or ascending, more or less caespitose, glabrous perennial, 3 to 7 dm.' high, 

 from short, creeping rootstocks, with linear-lanceolate leaves and dense, 

 exserted, cylindrical panicles. Culms slender, compressed, generally somewhat 

 geniculate at the base, scabrous below the i^anicle, otherwise very smooth; 

 nodes glabrous; sheaths glabrous, compressed, the lower much longer than the 

 internodes, imbricate, distichous, smooth on the hyaline margins; ligule ciliate, 

 with very short hairs; leaf-blades 1 to 3 dm. long, 3 to 7 mm. wide, scarcely 

 narrowed at the base, long-tapering to the apex, slightly scabrous on the upper 

 surface and margins, glabrous below, sometimes with a few long white hairs at the 

 throat. Panicles dense, spike-like, 2 to 5 cm. long, nearly 1 cm. in diameter, 

 exclusive of the setae; rachis angular, pubescent; branches short, contiguous, 

 1 or rarely 2-flowered; setae 8 to 12, involucrate, spreading, 5 to 10 mm. long, 

 unequal, slender, pale, yellowish or sometimes purplish, finely antrorsely sca- 

 brous. Spikelets ovate, acute, 2 to 2.5 mm. long; first glume about one-third 

 as long as the spikelet, ovate, acute or obtuse, 3-nerved; second glume one- half 

 to two-thirds as long as the spikelet, ovate, acute, 5 to 7 nerved, the mid-nerve 

 excurrent, the lateral ones anastomosing or abruptly vanishing in the hyaline 

 margin ; third glume equaling the flowering glume and slightly inclosing it by 



about equaling the nodes, striate, glabrous, margins hyaline, smooth; ligule very 

 short, ciliate-f ringed ; leaf-blades plane or becoming involute in drying, 1 to 3 

 dm. long, 3 to 6 mm. wide, long, slender, acuminate, scabrous, usually bearded 

 with few long white hairs at the throat and sparingly pilose. Panicles pale, 

 dense, cylindrical, spiciform, 2 to 5 cm. long, 5 to 6 mm. in diameter; rachis 

 pubescent; branches very short, generally 1-flowered; setae 6 to 10, involu- 

 crate, spreading-erect, 1 to 1.5 cm. long, antrorsely scabrous, pale. Spikelets 3 to 

 3.5 mm. long, broadly ovate, acute, apiculate; first glume one-half as long as the 

 spikelet, narrowly cordate, acuminate, 5-nerved; second glume about as long as 

 the spikelet, 7-nerved, acute, apiculate; third glume equaling the si:)ikelet, sili- 

 cate, 7-nerved, subtending a lanceolate, hyaline palea nearly its own length; 

 flowering ghinie l)roadly ovate or rotmid-ovate, acute, apiculate, strongly trans- 

 versely undulate-rugose, the inclosed palea nearly smooth, plane. 



Australia. 



Type specimen collected by F. von Mueller, Victoria River, Queensland. Distributed 

 under the name ,Setaria glauca Beauv., Ijut at once distinguished by its narrower 

 leaves, long setae, larger spikelets, longer first and second ghunes, and more 

 strongly rugose flowering glume, all the glumes being promiueutly apiculate. 



