188 



Cyperaceae 



Cyperus 



50 



Map 350 



Cyperus dentatus Torr. 



Jan. 



Feb. 



Mar. 



Apr. 



May 



June 



July 



Aug. 



Sept. 



Oct. 



Nov. 



Dec 



Miles 



o ^5 

 Map 351 



Cyperus Houqhtonii Torr. 



50 

 Map 353 



Cyperus Encjelmanni Steud, 



55 



Map 354 



Cyperus striqosus L. 



50 



Map 355 



Cyperus erythrorhizos Muhl 



cites numerous specimens from Lake and Porter Counties. She also refers 

 specimens of my collecting from La Porte, Newton, and Warren Counties 

 to this hybrid. 



12. Cyperus Engelmanni Steud. Map 353. Infrequent in the lake area. 

 All of my specimens are from the wet, sandy or muck borders of lakes. 



Mass. to Minn., southw. to N. J. and Mo. 



13. Cyperus strigosus L. (Including Cyperus strigosus var. capitatus 

 Boeckl., Cyperus strigosus var. compositus Britt., and Cyperus strigosus 

 var. robustior Kunth.) Map 354. This species is, without doubt, found in 

 every county in the state. The extreme variability of this species has led 

 authors to assign botanical names to the variations. I agree with some 

 other authors in thinking that the forms are a matter of nutrition or 

 of habitat and have no taxonomic value; hence I am referring all forms 

 to the species. It is found in moist soil of almost all kinds and in all 



