468 MINNESOTA BOTANICAL STUDIES 



Stipa avcnacca L. 



Reported by Sheldon ; report based on an incorrect determination of 

 S. comata Trin. and Rupr. 



Aristida dichotoma Alichx. var. Curtisii Gray. 



Reported in Wheeler's Catalog; report based on incorrect determi- 

 nation. 



Aristida tuberculosa Nutt. 



Reported in Lapham's Catalogue, and Britton & Brown's Flora; no 

 specimens. 



Aristida purpurascens Poir. 



Reported in Lapham's Catalogue ; no specimens. 



Muhlenbcrgia sobolifera (Muhl.) Trin. 



Reported in Lapham's Catalogue ; no specimens in University col- 

 lection. 



Muhlenbcrgia tenuiflora (Willd.) B. S. P. 



Reported in Lapham's Catalogue ; no specimens. 

 Muhlenbcrgia Schreberi J. F. Gmel. 



Reported by Sheldon in Minnesota Botanical Studies: the report is 



based on incorrect determinations of .1/. mexicana (L.) Trin. 

 Sporobolus asper (Michx.) Kunth. 



Reported by Lapham ; no specimens. 



Sporobolus vaginiflorus (Torr.) Wood. 



Reported in Upham's Catalogue, on collections of O. W. Oestlund; 

 apparently is based on an incorrect determination. 



Calamagrostis Pickeringii Gray var. lacustris (Kearney) Hitchcock. 

 No specimens in University herbarium ; occurrence doubtful. 



Calamagrostis cinnoides (Aluhl.) Barton. 



Reported in Lapham's Catalogue ; no specimens; probably does not 

 occur. 



Calamagrostis Macouniana Vasey. 



Reported in Wheeler's Catalog of Minnesota Grasses; report based 

 on wrong determination of C. canadensis (Michx.) Beauv. 



Ammophila arenaria (L.) Link. 



Reported in Upham's Catalogue as occurring along the south shore 

 of Lake Superior and inferred to occur in Alinnesota; no specimens. 



Spartina gracilis Trin. 



Reported in Wheeler's Catalog ; report based on incorrect determina- 

 tion of a specimen of S. Michanxiana Hitchcock from southwestern 

 Alinnesota. 



Eragrostis Frankii (Fisch., Mey, and Lall.) Steud. 



Reported in Upham's Catalogue on a collection by O. W. Oestlund ; 

 determination incorrect. 



Melica mutica Walt. 



Reported by L. H. Pammell from Houston County; no specimens, 



