5r)2 roACK.E. 



IMiiut nither soft, i25-GU fin. high. Leaves of tlie culms 3, 

 shoiiths ('OV(!riu<j tlie internodes, ligulo broad, decurreiit, toothed, 

 IJ mm. long; blades of the sterile slioots thin, Hat or irregidarly 

 involute, 5-10 cm. long, 3 mm. wide, abruptly pointed, those of 

 the culm 4-15 cm. long. Panicle e.xserted, oval or 2)yramidal, 8-13 

 cm. long, rays in twos aud threes, 1.5 cm. distant, the longest 4-0 

 cm. long, bearing 3-4 spikeU'ts on the outer three-fifths. Spike- 

 lets lax, oval, 8 mm. long. ;j-tlowered with a minute rudimeut of a 

 fourth, joint of rachilla slender, 1.5 mm. long; em})ty glumes thin, 

 -elliptical, 3-nerved, first 4.5 mm. long, second 5 mm. long; floral 

 glume thinly pubescent on the lower half of the nerves, oval, 5 

 mm. long; palea thinly pubescent on the keels, nearly as long as its 

 glume. 



Unalaska, Turner. 



Its nearest alUnities are P. hixpidnJa \'asey and P. f/rariUima. 



37. P. nemoralis L. S]». IM. 00 (l'?r)3). /'. rmi(f Am. authors 

 in part. /*. hnjophihi 'Vv\n. Hull. Sc. Acad. St. Petersb. 1:09 

 (18;5()). There are at least 35 other syminyms. 



A loosely tufted erect perennial, 40-70 cm. high, with no creep- 

 ing rootstocks; culms compressed or subterete, smooth. Sheaths 

 smooth ; ligule 0.5 mm. long; blades of culm 4 in number, scabrous, 

 erect, Hat or conduplicate, pungent-acuminat(>, 7-1'^ cm. long, 3.5-3 

 mm. wide. Panicle linear, ovoid or pyranii<lal. erect or nodding, 

 5-12 cm. long, rays scabrous, inhalf-wlioi-jsof 4-7, distant 3-3.5 cm., 

 the longest 5-6 cm. long, bearing spikeiets almost clustered on the 

 outer half or third, some with 2)edicels 0.7 mm. long. Sj)ikelet8 

 often tinged with violet, ellij)tical or linear-lanceolate, 3-0-Ho\vered, 

 5-0 mm. long, a long joint of rachilla 0.8 mm. long; empty 

 glumes acuminate, 3-nerved, first ovate-lanceolate. 3.7-3 mm. long, 

 second oval-lam?eolate, 3.5 mm. long; floral glume .sparingly webbed 

 ut base, 3-;5.2 mm. long, puljescent (not thiidy) on the lateral nerves 

 und lower half of the keel, apex tinged with yellowish brown, ellip- 

 ti(?al or subacute when spread, obscurely nerved; palea linear, 

 scabrid on the keels, 2.7 mm. long. 



'J'lie above is a description of well-grown typical plants intro- 

 duced from Europe into Michigan. 



