2r)2 POAt'E.t:. 



Mexico, Pri)if/hnU^, 347 T. 



3:. M. Mexicana (L.) Triii. Uiiitl. 180 (1H'2+). Jf/rosfi.s Me.r- 

 icana L. Miint. 1:31 (1707). A. /ofcn'jlora Miclix. Kl. lior. Am. 

 l:r)3(1803). a >i ua Mcrirn ltd Mvinw. Ji'^voat. :\'i (ISI-^). M/ih- 

 kiihenjia fuUosa Tvin. Unill. 190 (18-^8). 



Culms slomler, wiry, useciuling, mudi-bnincliod, (iO-lOO em. 

 liijili, from scaly creeping rootstocks. Slieatlis about two-tliirds as 

 long as the internodes; ligule 0.5 mm. long: blades thin. flat, sca- 

 brous, i)ungent-pointed, 10-15 cm. long, 3-5 mm. wide. Panicle 

 often jmrplish, lateral and terminal often included at the base, con- 

 tracted, 10-18 cm. long, rays mostly in threes, two of which are 

 very short, the longest linear, 3-5 cm. long, and densely ilowered 

 nearly to the base. Empty glumes shai'p- pointed or short-awned, 

 slightly unequal, the lower a little longer than the floret, 2.5-3 mm. 

 long; floral glume thinly pubescent on the lower half, lanceolate, 

 very sharp pointed. 3-nerved, 2-2.5 mm. long. 



Vermont, Prinyle ; New York, Beal i8; District of Columbia, 

 McCarfhy; Michigan, Z?m? 49, Wheeler ^iO; Minnesota, /Ittilei/ X 

 28, n 422. 



Found rather abundantly on low lands from Xew England to 

 Nebraska and Mexico; flowering too late in autumn to be of much 

 value for hay. 



Var. filiformis (Muhl.) Scribn. iiied. Ayrosfis fih'foniiis ]\Iuhl. 

 (Jram. 60 (1817). 



Panicle very slender and simple, borne on long filiform i)edicels. 



Illinois, U. S. Dept. Agricul. 318, from Wolfe. 



28. M. racemosa (Michx.) li. S. P. I'rel. Cat. X. Y. 07 (1888). 

 Agrodix rncemoxa Michx. Fl. Bor. Am. 1:53 (1803). Pohjinujon 

 (jhmemtux Willd. Enum. 87 (1809). TrirhorhJoa (jhnnerata Trin. 

 Fund. Agrost. 117 (1820). M. (jltmerafa Trin. Unifl. 191 (1824). 

 Ci)iiia racemom Kunth, Enum. 1:207 (1833). 



An erect simple sparingly-branclied perennial, 00-90 cm. high. 

 Sheaths nearly as long as the internodes; ligule a ciliato ring; 

 blades flat, scabrous, pungent-pointed, 8-12 cm. long, 3-5 mm. 

 wide. Panicle 5-10 cm. long, often purplish, exsertcd, oblong- 

 linear, often interrupted below, rays very short and densely 



