FESTL'CE.E. 531 



Agricul. 632; Micliigan, Farivell, Bcal VZO, CooUy; Utah, Jones- 

 1G39; Arizona, Trary ; Oregon, JIowcU ; CaliioYn'ni, So /ws. 

 Introduced from Eiiroi)e. 



2. P. inflrma II. & K. Nov. Gen. et Sp. 1:158 (1815). P. 

 annnaChiim. & Sclileclit. Liuntea, 0:38 (1831). 



A soft slender diifuse annual, 10-20 cm. high. Sheaths com- 

 jiressed, loose; ligule 2 mm. long; blades smooth, 3-8 cm. long, 

 obtuse or abruptly pointed. 1.5-2 mm. wide. Panicles mostly 

 exserted, ovoid or pyramidal, 2-4 cm. long, rays mostly in pairs 

 bearing 2-5 spikelets on the outer half. Spikelets subsessile or on 

 short pedicels, oblong, 2-4-<lowered, 3-4 mm. long, empty glumes 

 obtuse or acute, tips and margins scarious. first 1-nerved, second 

 longer than the first, elliptical when spread, 3-nerved. 2-2.2 mm. 

 long; floral glume broadly oval, about 3 mm. long, obtuse, mar- 

 gins and upi)er fourth scarious, ciliate on the keels and mai'gins up 

 to the middle ; i)alea nearly as long, linear, ciliate nearly the whole 

 length of the keels. 



Mexico (Jalisco), Palmer 483; Guatemala, J. D. Smith !I07. 



3. r. TiuviALis L. Sp. PI. or (1753). Koroii Mkadow- 

 GRASS. P. aiifjustifolia Ucria, Hort. Iteg. Panorm. 53 (1T80).. 

 P. dubia Leers, Fl. Ilerborn. 28 (ITTo). P. llohenarkeri 'Frin. 

 Bull. Sc. Acad. St. Petersb. 1 : Gl) (183(1). P. jxdiixlri.^ (). F. 

 Muell. Fl. Dan. /. 750 (HGl). /'. pralensix Pollich, Hist. PI. 

 Palat. 1:87. P. Pxeuih-hyhrida Schur. Knum. PI. Trajiss. TG!) 

 (18()()). P. scabm Ehrh. Beitr. 0:83 (1787). P. xelaceu Ihid^. 

 Fl. Angl. Ed. 1, 34 (1702). 



Culms 40-00 cm. high, rough or nearly smooth, erect from a 

 slightly decumbent base, with no running rootstocks. Sheaths 

 rough; upper ligule 5-0 mm. long, the others shorter; blades of 

 sterile shoots short or as long as the culm, those of the culm 3. Hat 

 or conduplicate, abruptly })ointed, the ujjper a-lO cm. long, al)out 

 :'. mm. wide. Panicle linear, oblong or more open, 10-1") cm. long, 

 rays in half-whorls of 5-0, sets of rays 3-4 I'ni. distant, the longest 

 5-0 cm, long, flower-bearing along the upjtei' half. Spikelets oval 

 or linear-oblong, 2-4-flowered, 3-4.5 mm. long, joint of rachilla 

 about 0.5 mm. long; iirst em^jty glume lanceolate, 1-nerved, 2-2.5 



