52 



long. Leaves of the innovations 3 to 6 cm. long, about 1 mm. wide, scabrous 

 above, smooth beneath. Leaves of tho culm scabious above, usually 2, 2 to 4 

 cm. long, about 2 mm. wide. Ligule hyaliue 2 mm. long. Axis of the panicle 

 and its branches scabrous, the longer lower branches 1.5 to 2 cm. long, naked 

 below. Spikelets 3- to 5-riowered, compressed, 7 to 10 mm. long. Empty glumes 

 4 to .5 mm. long, broadly lanceolate or ovate, acute, 3-nerved, scabrous on the keel. 

 First liowering glume 4 to 5 mm. long, scabrous on the keel and minutely scab- 

 rous all over and slightly hairy near the base, with very short appressed hairs. 

 Palea as long as the glume, keels strongly ciliate excepting near the base, 



pubescent between the keels, 

 2-toothed. .Joints of the rachilla 

 1 mm. long, smooth. 

 Potrero, Cal., April 'J, 1892, Speci- 

 mens received from the herbarium 

 of the California. Academy Sci- 

 ences. Name of collector not 

 given. Allied to I'oa sandl)e)(jii, 

 from which it may be separated 

 by its more densely-ilowered pani- 

 cles, nearly scabrous flowering 

 fflumes and smooth rachilla. In 



o 



Poa saudberfi'ii the floAvering 

 glumes are villous on the lower 

 half, as are the joints of the 

 rachilla. 



POA JUNCIFOLIA Scribu., sp. n. 



(PL VIII.) 

 A rather rigid, erect, glabrous peren- 

 nial, 1.5 to 3 dm. high, with firm, 

 erect leaves and strict panicles 

 5 to 8 cm. high. Lower sheaths 

 loose, striate, glabrous. Leaves 

 of the innovations about 5 cm. 

 long, involute, scabrous on the 

 margins near the apex. Culm 

 leaves 2 to 3, 2 to 5 cm, long, 

 1 to 2 mm. wide. Ligule about 2 

 mm. long, rounded-obtuse, entire. 

 Panicle-branches erect, the longer 

 lower <me8 2 to 3 cm. long, naked 

 below, scabrous, Spikelets 3- to 

 5-Uowered, 5 to 6 mm. long, some- 

 what compressed. Empty glumes 

 It road, ovate-obtuse, sometimes 

 acute, subequal, 3 to I mm. long, 

 3-nervcd, with broad, scarions 

 margins, scabrous on the keel near 

 the apex. Flowering glumes minutely scabrous on the back with occasionally 

 a few very short hairs near the base. The first one, 3 to 1 nun, long, obtuse. 

 Palea a little shorter than the glume, subciliate-scabrons along the keels except- 

 ing near the apex. 

 Point of Kocks, Sweetwater County, Wyo. (No. 3721, Aven Nelson, .July 13, 1897), 

 Related to I'oaarida Vasey, from whi(;h it is distinguished by its glabious flower- 

 ing gluuu-s. In /'. (irida the tlowering glumes are shorter, relatively broader, and 

 deustsly villous towards the base. 



FlO. 0.—Tiis<'tiaih wolfd V.i.sey: a, empty f;l"iiies; 

 h, two rtonts without tli(3 iTn]ity ;iliinies, sceu i'nmi thu 

 .side; f, iliirs;il view of llowiriiig ;;liiiiie; i/, Jialea. 



