276 POACE^. 



Fouud in the alpine regions of Xortli America, Europe, Asia, 

 and in Antarctic America. 



2. P. pratense L. Sp. PI. 59 (1753). Timothy. Heed's 

 Orass. 



Perennial; scabrid or smooth, 30-100 cm. high, one or more of 

 the lower iuternodes swollen into a corm or solid bulb. Sheaths 

 close, shorter than the internodes ; blades smooth, or scabrid if grown 

 in a dry warm climate, 15-20 cm. long, T-lOmm. wide. Spike 

 cylindrical, 3-9-17 cm. long, 6-8 mm. diam. Spikelets oblong, 

 nearly 3 mm. long, ciliate on the keels, the teeth 1-1.5 mm. long; 

 «mpty glumes equal, 3-nerved ; floral glume 2 mm. long, delicately 

 8-9-nerYed. Stamens and st3ies protrude from the top of the 

 spikelets. Fig. 62, Vol. I. 



Massachusetts, Beat 56; Michigan, Agrl. College, Beal 54; 

 Texas, GiUesjriej Iowa, Ilitchcock; Montana, Anderson 25; Ari- 

 zona, Tourney 151. 



The well-known meadow-grass, much cultivated. Found in 

 Europe, Russia, Asia, and cultivated in Xorth America. See Vol. 

 I. for a more complete account of its value. 



57. (107). Alopecuktjs L. Sp. PI. 60 (1753). Foxtail. 

 Colohacline Beauv. Agrost. 22 (1812). Tozzettia Savi, Mem. Ital. 

 Soc. Sci. 8:477 (1868). 



Spikelets 1-flowered, flat, crowded into a terminal head or cylin- 

 drical spikelike jjanicle, articulate on the apex of the enlarged pedicel. 

 Glumes 3 or 4, the 2 outer empty, conduplicate, acute, awnless, or 

 short-awned, flat-keeled, the keel ciliate or slightly winged, floral 

 glume shorter, broad, obtuse, hyaline, 3-5-nerved, with a short 

 awn on the back, or mucronate, the margins joined at the base in- 

 closing the flower; fourth (or palea) sometimes present next to 

 the flower, narrow, hyaline, keeled, acute, partly included by 

 the third; other j^alea or lodicules 0. Stamens 3. Styles distinct 

 or rarely joined at the base or to the middle, stigmas shortly hairy. 

 Grain enclosed in the scarcely hardened glumes, but not adherent. 

 Annuals or perennials, erect or decumbent at the base, leaf-blades 

 either flat or involute, upper sheaths often inflated. 



This genus has much the habit of Phleum; the structure of the 



