60 PANICACE.K. 



Dry soil, Xew Euglaud to the IJocky Mouutaius, south to the 

 Argentine Republic. 



This grass starts late in spring and is late in flowering. In 

 some of the prairie regions it i'ornis an important element in the 

 grazing. "With other wild grasses it is often cut for hay, though at 

 the east it is considered of poor (piality. 



Var. stipoides (Kunth) Hack. Moiiog. Phan. : 530 (I8S!t). 

 J. s/i/,(>i(f,'s 11. 15. K. Nov. rien. et sp. 1 : IS!) (1815). 



S})ikelets 4-<'i nun. long, awn 10-1 o mm. long; ligule 2-3 mm. 

 long; blades flat or suhconvolute above, scabrous or j)ubescent. 

 Kodes of the peduncle with short, silvery, silky hairs. Spikelets 

 chestnut-colored, first glume pilose for two-thirds its length, si.'cond 

 glabrous. 



\'ar. Linnaeanus JIaek. D. ('. Monog. Than, (i: .■);)! (ISS!)), A. 

 in(/(i/is L. in part. Savglndu tiiilaiti^ Chajjui. V\. S. States 583 

 (18(jO). Spikelets linear, oblong. 0-7 mm. long, awn 20-30 mm. 

 long; ligule 'I mm. long; blades very scabrous. Panicle 25-30 cm. 

 long. Tenn., Scribncr. 



Florida, Texas, Maine. 



Var. incompletus (Presl.) Hack. 1. c. A. incomjyletus Prcsl. 

 Eeliq. Ilivnk. 1 : 342 (1830). 



Sj)ikelets liiu-ar, oblong. 4 mm. long, brownish, the awn 20-22 

 mm. long. Sheaths glabrous; ligule 1-2 mm. long; blade 4-5 

 mm. wide, flat, glabrous or scabrous. Panicle 10-15 cm. long, 

 rather dense, rachis smooth. First glume truncate, p''ose for two- 

 thirds of its length, second glabrous. 



.Mexico, I'riiujh' 24(;(;, Puhin'V 500. 



28 A. unilateralis Hack. I). ('. Monog. IMian. : 533 (1880). 

 A. Kt'niin/N.s Mil. ]{ot. S. (\ and (Ja. 1 : 38 (LSIO). Sun/funu 

 xmaiihini. l'hap)n. Fl. S. States. 583 (18(50). 



Peri'uniiil; cnbus (lO-lOO cm. oi' more high. Sheaths ghibrons. 

 nodi'S ])uberulent or smooth; ligule 4-5 mm. long; blades narrowed 

 at the base, Ihit or subconvolule, 2-5 mm. wide. Panicle 18-25 

 cm. long, linear, sccund, dense or open, rays capillary, often cnrved. 

 Sjtikelets linear-lanceolate or linear-oblong, 7 mm. long, lirown. first 

 glume Arm, truncate, 0-nerved, callus densely barbed; second 



