163 [ 237 3 



Scispus lactistris, (Linn.) Swamps and ponds in prairies; commoa; 



July 6. 

 Scispus triqueter, (Linn.) Swamps, Devil's lake ; July 30. 

 Scispus mariiimus, (Linn.) With the preceding ; August L (Ji Torr., Mon. 



N. Amer. Cyp.) Borders of rivers and ponds in the prairies about 



Jacques and Shayen-oju rivers ; July 9. 

 Elocharis tenuis^ (Schulze.) Var., with the nut not verrucose ; bristles, 



none. Muddy banks of Devil's lake ; August 6. 

 Elocharis pymcca^ (Torr. Mon. N. Amer. Cyp., 1. c.) Var., nut without 



bristles. Borders of ponds in prairies of Jacques river ; July 9. 

 Elocharis palustris, (R. Br.) Var. (?) small, cespitose, (2 — 6 inches ;) 



glumes ovate-lanceolate, rather obtuse ; bristles, (?) ; style, 3 cleft ; 



nut obovate, compressed, dull ; tubercle conical, broad at the base, 



rather obtuse, one-quarter the length of the nut. Devil's lake ; 



August 6. 

 Carex straminea, (Willd.) Swamps, Council Bluffs ; May 14. 

 Carex arida, (Torr. and Schw.) Shady, fertile woods, Upper Missouri ; 



October 20— /r. 

 Carex Sartwellii, (Dew., in Sill. Jour. 43, p. 90, t. cc, f. 95.) Swamps ia 



prairies. Council Bluffs, May 22. Near C. intermedia. This species 



is common in the western part of the State of New York ; it is also 



found in Indiana. 

 Carex cespitosa, (Linn.) With the preceding ; May 7. 

 Carex lanuginosa, (Michx.) C. pellita, (Muhl.) Sandy banks of the 



Missouri ; May 26. 



Tar. minor. Heads short ; few flowered ; with the 

 preceding. 

 Carex granularis, (Schlz.) Valley of Shayen-oju river; July 17. 

 Carex PennsylvaTiica, (Lam.) Prairies, Council Bluffs ; May 16. 

 Carex lofigirostris, (Torr.) Shady woods, Upper Missouri ; June 10. 

 Carex lacustris, (Willd.) Prairies, Council Bluffs ; May 20 — July 6. 

 Carex Houghto?iii, (Torr.) With the preceding ; May 7. 



GRAMINEiE. 



Alopecurus geniculatus, ^ arislulatus, (Torr.) Borders of swamps ia 

 prairies ; July 6. 



Panicum virgatum, (Linn.) Abundant on all the high prairies, but no- 

 where so luxuriant as near the Upper Des Moines river and Spirit 

 lake ; July 13. 



Panicum capillare, (Linn.) Sandy plains, Shayen oju river ; July 26. 



Stipa membranacea, (Pursh.) Eriocoma cuspidata, (Nutt.) Sandy banks 

 of the Shayen river, Missouri ; June 19. 



Stipa sparti, (Trin.) S. parvijlora, (Nutt., not of Desf.) No ticket with 

 the specimens. 



Stipa jiincea, (PiiTshy'iSuit.) S. cap illata, [Linn. — Hook.?) High and 

 dry prairies between the Missouri and Mississippi rivers ; July 14. 



Urachne parvijlora, (Trin.) Agrostis miliacea, (Linn.?) Differs in its 

 more hyaline, and less distinctly 3-nerved glumes ; but in .other re- 

 spects does not differ from the European plant. It is here noticed, for 

 the first time, as a native of North America. Dry hills at the upper 

 end of the Grand Detour, or the "Great Bend" of the Missouri. 



