No. 14.] FLOWERING PLANTS AND FERNS. 83 



Cyperus strigosus L. (bristly). 



Common. Meadows, fields and along streams, usually in 

 moist, but sometimes in dry soil. 



The var. capitatus Boeckl. (densely clustered) is reported 

 to occur. Aug. — Sept. 



Often a troublesome weed in cultivated ground. 

 Cyperus strigosus L., var. robustior Kunth (stouter). 



Rare or occasional. Fields and meadows, growing with 

 the typical form. Aug. — Sept. 



Cyperus Grayii Torr. 



Occasional along the coast on the higher portions of the 

 beaches and among sand dunes. Aug. — Oct. 



Cyperus filiculmis Vahl (thread-stemmed). 



Rare or occasional. Dry or sandy fields. July — Aug. 

 Cyperus filiculmis Vahl, var. macilentus Fernald (lean). 



Common. Dry, sandy or sterile soil. July — Aug. 



DULICHIUM Pers. 



Dulichium arundinaceum (L.) Britton (reed-like). 

 Dulichium spathaceum Pers. 



Common. Wet places about ponds and in shallow water. 

 July — Sept. 



ELEOCHARIS R. Br. Spike Rush. 



Eleocharis quadrangulata (Michx.) R. & S. (four-cornered). 

 Eleocharis mutata Britton, not R. & S. 



Rare. Shallow water of pond: Guilford (G. H. Bartlett). 

 Aug. — Sept. 



Eleocharis Robbinsii Oakes. 



Rare. In ponds : Voluntown, Groton, Ledyard and East 

 Lyme (Graves), Griswold (Harger), Monroe (Eames), Salis- 

 bury (Bissell). Sept. 



Eleocharis olivacea Torr. (olive-colored). 



Open bogs and muddy borders of ponds. Rare inland: 

 Salisbury (Mrs. C. S. Phelps), Windsor (Bissell). Occa- 

 sional southwestward and along the coast. Aug. — Sept. 



