122 ROCHESTER ACADEMY OF SCIENCE. [Oct. 8, 



72. C. sparganioides Muhl. 

 Rich woods, wet meadows, etc. ; common. 



73. C. Muhlenbergii Schk. 

 Rare. Dry sandy ridges near Irondequoit bay. Sandy knolls at 



Mendon ponds. Braddock's bay, Bradley. 

 A form approaching var. enervis Boott occurs at Mendon, Mr. Baxter. 



74. C. cephalophora Muhl . 

 Dry fields, knolls, etc. ; common. 



75- C. gynocrates Wormsk. [C. Redowskyana C. A. Meyer.] 



Rare. Springy banks a few miles south of Rochester, Dr. C. Dewey . 

 Bergen swamp, Genesee county. 



76. C. exilis Dewey. 



Wayne county, E. L. Hankenson . 



yj. C. interior Bailey, Bull. Torr. Club, 20: 426 (1893). 



Low ground, Adams Basin and Macedon, M . S . Baxter. 



78. C. echinata Murray, var. microstachys Bceckl. (C. scirpoides Schk. 

 C. sterilis Willd.) [C sterilis Willd.] 



Frequent in sphagnum swamps. 



79. C. sterilis excelsior Bailey, Bull. Torr. Club, 20: 424 (1893). 

 Bergen swamp, M. S. Baxter. 



80. C. trisperma Dewey. 

 Swamps; scarce. Gates, Geo. T. Fish. Mendon, M. S. Baxter, 



Wayne county. 



81. C. Deweyana Schwein. 

 Dry woods ; infrequent. Henrietta, Adams Basin, Brockport, Mace- 

 don, and elsewhere . 



82. C. bromoides Schk. 

 Swamps, marshes ; common. 



83. C. siccata Dewey. 

 Rare. Dry hillsides, Penfield, M. S. Baxter. Bergen swamp, Clinton. 



84. C. tribuloides Wahl. [C. lagopodioides Schk.) 

 Open marshes and low meadows ; common. 



85. C. tribuloides Wahl. var. Bebbii Bailey. [C. tribuloides Bebbii (Olney) 

 Bailey.] 



Low grounds ; common. 



86. C. tribuloides Wahl. var. cristata Bailey. [C. cristata Schweinitz ) 

 [C. tribuloides cristata (Schwein.) Bailey.] 



Low grounds and fields ; common. 



87. C. scoparia Schk. 

 Wet grass lands ; common. 



88. C. straminea Willd. 

 Moist copses and fields ; infrequent. 



89. C. straminea Willd. var. mirabilis Tuckerm. [ C. straminea mirab.ilis 

 (Dewey) Tuckerm.] 



Wet meadows ; frequent. 



