Eleocharis 



Cyperaceae 



201 



Eleocharis intermedia 



50 



Map 386 



Schultes 



50 



Map 387 



Eleocharis obtusa (WilldJ Schultes 



6. Eleocharis ovata (Roth) R. & S. OVOID Spikerush. Map 385. My 

 only specimen was collected in the bottom of a dried-up dredged ditch about 

 4 miles southeast of Conrad in Newton County and determined by H. K. 

 Svenson. It has been reported from Lake and Porter Counties by Peattie 

 but I have not seen a specimen. 



Local from Newf . and e. Que. to Maine, Vt., Conn., and Mass. ; also in 

 Mich., Wis., Minn., and Wash. 



7. Eleocharis intermedia (Muhl.) Schultes. (Rhodora41: 67. 1939.) 

 Matted Spikerush. Map 386. Muddy borders of ponds and lakes, wet, 

 marl borders of lakes, and in the outlets of springs. 



Que. to w. Ont., southw. to N. J., Pa., Ohio, and Iowa. 



8. Eleocharis obtusa (Willd.) Schultes. Blunt Spikerush. Map 387. 

 Throughout the state in muddy or wet places in almost all habitats, prin- 

 cipally in ditches, sloughs, swamps, and ponds and on the borders of 

 streams and lakes. 



The species is variable and my no. 45541 from Monroe County and no. 

 24288 from Posey County are here cited as exceptional plants. 



Cape Breton and e. N. B. to Nebr., southw. to the Gulf of Mexico; 

 appearing again in the northwest from B. C. to Calif. ; also in the Hawaiian 

 Islands. 



8a. Eleocharis obtusa var. ellipsoidalis Fern. (Rhodora 31: 218. 1929.) 

 I have a specimen from a tamarack bog in La Porte County that Svenson 

 refers to this variety. 



E. Mass. to Va. and Ind. 



9. Eleocharis Engelmanni Steud. Engelmann Spikerush. Map 388. 

 In muddy places in roadside ditches and on the muddy borders of artificial 

 and natural ponds. 



S. Maine to Va., westw. through Ind., Tenn., and Mo. to Okla. 



