THE IOWA SEDGES. 361 



garding this collection Prof. Bailer writes Mr. Barnes: 

 "Very like C. sUicea Olnev ." Ames. June 14. 1897, fide 

 Boott 1 : Belmond. 1S97. a doubtful form with the inner face 

 smooth. Pammel. 



71. C. fcenka perplexa Bail*:; •: Mem. Torr. Ciub. :. :; 



188 

 Illus. Flora, 1, 357: Bailey in Gray's Man., 6th ec 



Rare on prairies: not before reported from Iowa. 



Buffalo. Sc^tt county. June. 1896, Barnes A Miller. C s- 



pitose in habit, the culms i}< to 3 feet high, spikes 3 to 6. 

 more aggregated larger and more truncate at the base than in 

 type, the pcrigynia not strongly nerved on the outer face, and 

 smooth or very obscurely nerved on the inner. Spirit Lake- 

 June 24. 1 881, Arthur. Thi-< latter is the C. adusta of Ar- 

 thur's catalogue. It seems to be identical with the > 

 county plant which was determined by Prof. Bailey. 



72. C. straminea Willd. Schkuhr. Ricdgr. 49 (180 1 . 



Illus. Flora, : $58 _. S6.*: Bailey in Gray"* Man.. 6th ed.. 621 : Arthur. Cont. 

 Fl. Iowa, in: MacMi Ian, Metas. Minn. Val., 106: Tracy. Fl. Mo.. 94: 

 Brende!, Fl. Peoriana, 62: Rydberg, Fl. Sand Hills Neb.. 1S5: Fink. 

 Proc. Iowa Acad. Sci., iv, 106. 



Woods and prairies: the tvpic il plant seems to be rather 

 scarce. This and the related species and varieties run to- 

 gether inextricably, and form a most perplexing group. 



Fayette countv. 1895, Pink: Scott county. June. 18 ) 

 Barn:: Jc Miller: Emmet countv. a form common on dry 

 prairies with stiffer culms, 10 to 20 inches high, and larger 

 spikes and perigynia. clo-ely approaching C. feslucacea V. 

 Crafty: Decatur countv, July, 1897, Fi::patrick; Granite. 

 Lvon county. June. 1^ .7. N . Spirit Lake. June 4. 1 881, 



Arthur. 



73. C. straminea mirabilis Dew. Tuck. Enum. Meth.. 



iS 1843 



C. mirabili> Dew. Sill. Jour . xxx, 63(1836). 

 Illus. Flora, 1. 35S: Bailey in Gray's Man., 6th ed., 621: MacMillan, Metas. 

 Minn. Val., 107: Upham, Supl. Fl. Minn., 49: Webber. Fl. Ne: 



