A(ilt(>S'l'll)K.K. di'iO 



A (li'iisi'ly tul'ti'tl strict lijjht-<;rei'n scabrous iicrcuuial. about 

 12<> cm. liij,'li. Sbcatlia aliortiT or louifcr tluiu the iiitcrnoih's; 

 li;,Mil(' lirui, ;{-5 nun. loug; blades coiiduplicutc, ri;;i(l. '^r) 40 nn. 

 long, about 1 nun. diain. i'aniclo slender, spikclike, li.irlil ;irecn 

 or purple, ^O-IJO cm. Imuj,', 5-10 mm. diani.. rays numerous, erect. 

 I-;{ cm. lonj,'. Spikelets on pedicels l-;{ mm. Ion;,', i-mpty ;;lumes 

 nerveless, seabrid toward the tip. oval. l.;5-l.l nun. hmu; lloral 

 ;;lume\vith a very . nudl pencil-tul't of hairs at the base oidy. linear, 

 :{-nerved, '.i.,'i—i mm. lon;r, ape.x 2-toothed, the awn 4-10 mm, 

 1( ii;:; paleii linear ucuto, us long us its glume. Neurly allied to .1/. 

 (fjfiiiis. 



Mo.vit'o, Prinf/h' 40;j. 



Texus to Arizomi und ^rexico. 



41. M. comata (Thurl).) Uenth. Va.sey. IJep. Dep. A^rric. /. 

 5:24T (1H81-82). Vtmya vomuta Thurb. Proc. I'hila. Acad. 7!) 

 (18(53). 



A ratlier stout simple erect ))?rennial, :5()-!)0 cm. lii^rh. with 

 creeping scaly rootstocks. Slieaths about G, mostly snKMjth, shorter 

 than the internodes; ligulc u lasceratc; fringe 1 mm. or less in 

 length; blades dull green, rough on both siiles, Hut or convolute, 

 pungent-pointed, 8-15 cm. long, 3-5 mm. wide. Panicle })ale 

 green, lead-colored or I'urplish, 8 12 cm. long, 1-1.1} mm. 

 diam., often with intcrrujjtions and short si)ikes below. Spikelets 

 on very short pedicels; empty glumes conduj)licate. liueur-laneeo- 

 lute, the single nerve serrulate, mucronate. first 2.5-;5.:j mm. long. 

 second u little longer: lloral glume thin, linear-lanceolate, ,'3 nerved, 

 '.\ mm. long, with silky hairs from the callus as long as the floret, 

 the awn 3-S mm. long; jxilea acute, as long as its glume, (irain 

 linear 1.3 mm. long. 



Colorado, Patterson, ('assidij; Montana. WiUiams; California, 

 Kellogg <ni(l Jlanird lOitT, Ilall and JfartxHtr 185. 



Colorado to California ou alluvial baid\s of streams. 



•12. M. Porteri Scribn. in ^IS. M. Temna Thurb. Gram. Mex. 

 Bcuud. ined. Porter and Coult. Syn. Fl. Col. 144 (1874). 



A branching dilTuse or decumbent perennial, often more or less 

 purple or red, 30-GO cm. high. Culms solid or nearly so, nodes 



