24 



blow-outs throughout the region; one of the commonest 

 blow-out inhabitants. 

 Panicum virgatum L. 



Dry valley, Cherry county, July 21. (106) 

 Panicum dichotomum L. 



Sheridan county, July 12. (123) 

 Spartina gracilis Trin. 



Wet valley, Sheridan county, July 9. (117) 

 Spartina cynosuroides (L.) Willd. 



Wet valleys at head of North Loup, Cherry county, July 19. 

 (130) 

 Andropogon scoparius Michx. 



Sand hills throughout the region. 

 Andropogon hallii Hack. 



Antelope county, August 2. (206) Sand hills from eastern 

 Cherry county eastward. 

 Alopecurus geniculatus L. 



Box Butte county, July 12. (112) 

 Stipa comata Trin. & Bupr. 



Prairies, Box Butte county, July 6. (125) " Sand hills 

 throughout the region. 

 Oryzopsis cuspidata (Nutt.) Benth. 



Box Butte county, July 7. (114) Sand hills, especially 

 blow outs, Sheridan county and western Cherry county. 

 {Stipa membranacea Pursh; O. membranacea (Pursh) 

 Vasey. But as there was already a Stipa membranacea 

 L. — Festiica uniglumis Sol. — Pursh's name is hardly 

 available. P. ) 

 Oryzopsis micrantha (Trin. & Rupr.) Thurber. 



In canon. Long Pine, July 29. (101) 

 Muhlenbergia pungens Thurb. 



Blow-outs and sand hills throughout the region. 

 Phleum pratense L. 



In canon, Brown county, July 29. (124) 

 Sporobolus airoides (Steud. ) Torr. 



Joy's ranch, Sheridan county, July 10. (128) 



