MANUAL OF THE GRASSES OF THE liNITI«;i) STATES 



firm, less than I mm. thick, flexuous, v v 



mostly basal, 2 on the culm, usually sSWK, 



puberulent on the upper surface; 



panicle open, 5 to 8 cm. Long, the 



lower branches mostly in pairs, 2 to 



3 cm. long; spikelets, 3- to 5-flowered, 



(> to 10 mm. long; glumes 3 to 5 mm. 



09 



KiauRw 124. I'oa r.onfinis. Plant, X L; floret, X L0. 

 (Piper 4910, Wash.) 



long; lemmas 4 to 5 mm. long, with 

 a rather short web at the base, sca- 

 berulous at least on the rather dis- 

 tinct nerves, pubescent on the low- 

 er part of keel. % Dry slopes, 

 southwestern Oregon and northwest- 

 ern California; apparently rare. 



Figttee vzr>. Poarh/izomata, Plant, X L; floret, X 10. 

 (Type.) 



12. Poa fibrSta Swallen. (Fig. 120.) 

 Culms 15 to 35 cm. tall, erect from 

 an ascending base; lower sheaths 

 thin, smooth and shining; ligule I to 

 L.5 mm. long; blades 4 to 8 cm. long, 

 firm, conduplicate, curved, pungent, 

 scabrous; panicles 4 to 10 cm. long, 

 dense, the short appressed branches 

 floriferous to the base; spikelets 3- 

 to 4-flowered, 5 to 6 mm. long; 

 lemmas 2.5 to 3 mm. long, acute or 

 subobtuse, glabrous or obscurely pu- 

 bescent toward the base. % Sa- 

 line flats, Shasta Valley, Siskiyou 

 County, Calif. 



13. Poa atropurpurca Scribn. (Fig. 

 1 27 J Culms erect, 30 to 40 cm. tall; 



