21 



7 nerved; flowering glume glossy, nearl_y smooth or finely and faintly transverse- 

 rugose or pitted, striate; the inclosed palea similar in markings, slightly convex. 



Widely cultivated and often an escape in fields and waste places; very variable. 

 Quebec to Minnesota, south to Florida and Texas. Native of Europe and Asia. 

 July-September. 



Chaetochloa italica germanica (Mill.) Scribn. U. S. Dept. Agr., Div. Agros. Bui. 6: 

 32 (1897). Paniaim germanicum 

 Mill. Gard. Diet., ed. 8, 1 (1768). 

 Setaria germanica Beauv. Agrost. 51 

 (1812). 



A smaller form, 2 to 6 dm. high, with 

 slender culms, usually branching 

 at the base; leaves 0.5 to 2 dm. 

 long, 5 to 10 mm. wide, scabrous. 

 Panicles dense, cylindrical, obtuse 

 at the ai^ex, usually tapering at the 

 base, green or purplish, 5 to 10 cm. 

 long, about 1 cm. in diameter; setae 

 purple, rarely green, 5 to 15 mm. 

 long, much exceeding the spikelets. 

 Flowering glume green or purplish, 

 when green, usually more or less 

 blotched with purple. 



Like C. italica, this variety is widely 

 cultivated in this country under 

 the name of Hmigarian grass or 

 millet, with about the same range 

 as the type; often escaped from cul- 

 tivation in fields and waste places. 

 Some forms of this grass can scarce- 

 ly be distinguished from C. viridis 

 (L. ) Scribn. , and it is jirobably only 

 a form of that species changed by 

 cultivation and intermediate be- 

 tween C. viridis and C. italica. 



11. Chaetochloa magna (Griseb.J 

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

 Agros. Bui. 4: 39 (1897). Setaria 

 magna Griseb. Fl. Brit. W. Ind. 554 

 (1864) . ChamcTrapJiis magna Beal. 

 Grasses of N. Am. 2: 152 (1896). 

 (Fig. 10.) 



A coarse, stout, erect perennial (?) 10 to 

 36 dm. high, with cylindrical culms 

 0.5 to 2 cm. thick at the base, linear-lanceolate leaves and dense, cylindrical panicles 

 1.5 to 3 dm. long. Culms branching at the base, glabrous or slightly scabrous 

 below the smooth nodes; sheaths loose, spreading, striate, compressed, glabrous, 

 scabrous on the keel, margins smooth and hyaline below, densely ciliate-fringed 

 above; ligule very short, ciliate-fringed with white hairs; leaf-blades 3 to 6 dm. 

 long, 1 to 3 cm. wide, long attenuate-pointed, gradually narrowed to the base, 

 scabrous on both sides, serrulate-scabrous on the cartilaginous margins. Panicles 

 green, virgate, generally interrupted below, 2 to 5 cm. in diameter; rachis stri- 

 ate, densely pilose, branches 1 to 5 cm. long, strict, densely flowered, contiguous, 

 much exceeding their internodes, or the lower rather remote; seta; 1 to 3, green, 



Fig. 10. — Ghcetochloa rnagna : a, branch showing 

 spikelet and setoB ; 6, view of the spikelet ; c, flow- 

 ering glume; d, anterior view of the flowering 

 glume, showing palea. 



