376 MINNESOTA BOTANICAL STUDIES. 



Cyperus filiculmis Vahl, Enum. 2 : 328. 1806. 

 Coll. : Wheeler 348, Crooked Creek. Jul3^ 



Cyperus houghtoni Torr. Ann. Lye. N. Y. 3: 277. 1836. 

 Coll. : Wheeler 346, Crooked Creek. July. 



The only previous collection known from Minnesota is that 

 of Holzinger, St. Croix River, Minn. Britton reports this 

 collection in the Bull. Torr. Club, 18: 368. 1891. 



The collection from Crooked Creek was made from the sum- 

 mit of a very dry sandy hill. Both C. houghtoni and C. 

 schweinitzii grow in sand but the former probably grows 

 in the drier locality of the two. 



Eleocharis acicularis (L.) R. & S. Syst. 2: 154. 1817. 

 Coll. : Wheeler 527, Jefferson. Aug. 



Scirpus lacustris L. Sp. PI. 48. 1753. 



Coll. : Wheeler 148, Winnebago. June. 



Scirpus atrovirens Muhl. Gram. 43, 1817. 

 Coll. : Wheeler 267, Winnebago. June. 



Scirpus cyperinus (L.) Kunth, Enum. 2: 170. 1837. 



Coll. : Lyon 168, Crooked Creek ; Wheeler 425, Jefferson. 

 June, July. 



Carex lupulina Muhl.; Schk. Riedg. 2: 54. y. i2j. 1806. 

 Coll. : Lyon 280, Jefferson. July. 



Carex lurida Wahl. Kongl. Acad. Handl. (IL) 24: 153. 

 1803. 

 Coll. : Wheeler 142, Winnebago. June. 

 No Minnesota specimens in the Herbarium of the University. 

 Previously collected at Lake Itasca, Sandberg No. 1180. 



Carex hystricina Muhl. ; Willd. Sp. PI. 4: 282. 1805. 

 Coll. : Wheeler 119, Winnebago. June. 



Carex filiformis L. Sp. PI. 976. 1753. 



Coll. : Wheeler 121, Winnebago. June. 



Carex torta Boott ; Tuckerm. Enum. Meth. 11. 1843. 

 Coll. : Lyon 60, Winnebago. June. 

 Not previously reported from Minnesota. The nearest point 

 of previous collection, as shown by the Herbarium of 

 the University, is Winnebago county, Wisconsin. 



Carex stipata Muhl. ; Willd. Sp. PI. 4 : 233. 1805. 

 Coll. : Wheeler 116, Winnebago. June. 



