226 



Cyperaceae 



Carex 



50 



Map 438 



Carex prairea Dewey 



50 



Map 439 



Carex stipata Muhl. 



50 



Map 440 



Carex stipata var, maxima Chapm. 



17. Carex decomposita Muhl. Map 436. Specimens to confirm the Mar- 

 shall and Lake County reports for this very local species could not be 

 located. From Pepoon's statement that it is an abundant species in the 

 Chicago region it seems very likely that his report was based upon mate- 

 rial of C. diandra or perhaps of C. vulpinoidea. Specimens of C. vulpinoidea 

 collected by Umbach from the Illinois portion of the Chicago region and 

 labeled C. decomposita were found in the University of Wisconsin Herba- 

 rium. C. decomposita is represented from Indiana by two collections: 

 Deam, June 26, 1898, in bunches of moss on logs in a drained pond, Little's 

 woods, Lancaster Twp., six miles northeast of Bluffton, Wells County; 

 and Kriebel no. 2221, in a knothole at base of tree in swamp, two and a 

 half miles northeast of Avoca, Lawrence County. 



N. Y. to Mich., southw. to Fla., La., and Mo. 



18. Carex diandra Schrank. (Carex teretiuscula Gooden.) Map 437. 

 Frequent in the lake area on marly and sandy borders of lakes and in 

 swales, marshes, or bogs. The specimen upon which Coulter's report from 

 Daviess County was based should probably be referred to C. prairea. The 

 specimen could not be located in the Indiana herbaria. 



Newf. to Alaska, southw. to N. J., Ind., and Colo. ; also in Eurasia. 



19. Carex prairea Dewey. (Carex teretiuscula var. ramosa Boott and 

 Carex diandra var. ramosa (Boott) Fern.) Map 438. Frequent, except in 

 southernmost counties, in marshes, tamarack bogs, marly swamps and on 

 borders of streams or lakes. 



Que. to Sask., southw. to N. J., Ind., Iowa, and Nebr. 



7. § VULPINAE 



Perigynium tapering into the beak, the body strongly nerved ventrally or perigynium 

 very long beaked. 

 Perigynium 4-6 mm long, rounded at the base, strongly nerved ventrally, the beak 

 1-2 times the length of the body; sheaths not dotted with purple ventrally. 



