276 POACE.E. 



Found in the ulpino regions of North America. P^urope. Asia, 

 and in Antarctie America. 



i. P. pratense L. Sp. Tl. 50 (1753). Timotjiy. IIkkd's 

 Grass. 



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

 the lower internodes swollen into ti corm or solid bulb. Sheaths 

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

 in u dry wai'm climate, lo-;iO cm. long, T-lOmni. wide. S})ike 

 cylindrical, 3-9-17 cm. long, G-8 mm. diam. Si)ikelets oblong, 

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

 empty glumes ecjual, 3-nerved; iloral glume )l mm. long, delicately 

 H-!t-nerved. Stamens and styles protrude from the top of the 

 spikelets. Fig. (51*. Vol. I. 



Massachusetts, Beal 50; ^fichigan, Agrl. College, 7>m/ 54; 

 'i'exas, (lillespic; Iowa, Ilikluovlc; Montana, Andi't'i<on 25; Ari- 

 zona. Tuiimeji 151. 



Tlic well-known meadow-grass, much cultivated. Fouiul in 

 Euroiie, Kussia. Asia, and cultivated in North America. See Vol. 

 I. for a more eom})lete account of its value. 



57. (107). AloPECURUS L. Sp. PI. (50 (1753). FoxTAiL. 

 CoJobachne Heauv. Agrost. 'I'l (1812). Tazzettia Savi, Mem. Ital. 

 Soc. Sci. 8:477 (1808). 



Spikelets 1-ilowered, flat, crowded into a terminal liead or cylin- 

 drical si)ikelike panicle, articulate on the apex of the enlarged pedicel, 

 {{lunies 3 or 4, the 2 outer emi)ty, conduplicate, acute, awnless. or 

 sliort-aAvned, 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 mncronate, the margins joined at the base in- 

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

 the flower, narrow, hyaline, keeled, acute. i)artly iiu-ludcd by 

 the third; other palea or lodicules 0. Stamens 3. Styles distinct 

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

 (J rain 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 oi,PJileum; the structure of the 



