THE IOWA SEDGES J33 



2. Cladium mariscoides iMuhl) Torr. Ann. Lye. N. Y.. 11, 372 

 credited to Iowa in Gray'? Manual, 6th ed., 5S6, and in the Illustrated Flora, 



. 1 have been unable to find an Iowa specimen of this plant in any 



collection in the state, nor can one be found in herbaria of the State Univer- 

 sity of Minnesota, the Missouri Botanical Gardens, the Gray herbarium, 

 nor the herbarium of the Columbia University, New York City. Dr. Brit- 

 ton writes me that he took the Iowa range of the plant from Gray's 

 Manual. It is very doubtful whether the plant has been detected 

 within our limits, but subsequent research may yet bring it to light. Mr. A. 

 A. Heller writes me from Minneapolis that they have Minnesota speci- 

 mens in the State University herbarium. It i- also reported from Wiscon- 

 sin bv Bruhin, and from Illinois bv Brendel. 



S CLE RI A Berg. Kongl. Acad. Sv. Handl., xxvi. 142 



A large genus of some 100 specie^, of which number 10 

 occur in the eastern L nited States. Annuals or perennials. 



Illus. Flora, 6; Gray's Man., 6th ed., 63: Arthur. Fl. Iowa. 1: MacMillan, 

 Metas. Minn. Val., 2: Tracy, Fl. Mo., 1. 



I. S. TRIGLOMERATA MtcJlX. Fl. N. A.. II. l6H (1803 . 



Illu-. Flora, 1. jS.. rig. 663; Gray's Man.. 6th ed., 586; Arthur, Fl. Iowa, 33: 

 MacMillan, Metas, Minn. Val., 105: Tracy, Fl. Mo., 92; Brendel, Fl. 

 Peoriana, 62: Bruhin, Fl. Wi?.., 278. 



Rare in the central, eastern, and southern portions of the 

 state: low ground and thickets. The conical, bright white 

 akenes are exposed in the mature plant. 



Charles City and Elmira, 1S89. Hitchcock : Grinnell. June, 

 1SS6. Johnson; Wild Cat Den. Muscatine county. Barnes & 

 Miller: Charles City, 1SS1. Arthur; Decatur county, in 

 flower, June 8. and in fruit July 2. 1S97. Fitzpatrick. 



Note — Scleria verticillata Muhl. has been reported from Minnesota, Ill- 

 inois, and Kansas, and Prof. L. H. Pammel tells me he has collected it near 

 La Crosse. Wisconsin. It probablv occurs in the eastern part of our state. 



CAREX L. Sp. PL. 972 (1753). 



A vast and difficult genus which contains about two-thirds 

 of all our sedges. The unisexual, monoecious or dioecious 

 flowers present little variation, hence the specific characters 



