THE IOWA SEDGES. 



1 £ ' 



^5. 



50. C. teretiuscula prairea (Dezv.) Brittou. Illus. Flora, 



1, 344 (1896), 



C. teretiuscula var. ramosa Boott. 111. Car.. 145 (1867). not C. ramosa Schk. 

 (1806). 



Illus. Flora, I.e.; Bailey in Gray's Man., 6th ed., 615; MacMillan. Metas. 

 Minn. Val., 113; Bruhin. Fl. Wis., 278. 



With the type, and probably more widely distributed. As 

 it occurs with us it is usually coarser than the typical plant, 

 the compound spike heavier. Not before reported from 

 Iowa. 



Estherville, Emmet county. June 25, 1881, C ratty ; Grin- 

 nell. May, 1886, Norris; Story City, June 7, 1897, Pammel 

 <£■ Beyers; Granite, Lyon county, June, 1897, Shimek; Arm- 

 strong, 1897, Cratty. 



51. C. gravida Bailey. Typ. Car. 5 (1889). 



(J. cephaloidea Auc. Am. in part, not of Dewey (1S40). 



C. gravida var. laxifolia Bailey, Typ. Car. 6 (1889). 

 Illus. Flora, 1, 345, fig. S29; Bailey in Gray's Man., 6th ed., 615: Arthur, Fl. 

 Iowa, 33 (as U. cephaloidea); MacMillan, Metas. Minn. Val., 113; Web- 

 ber, Fl. Neb.. 98. 



Low ground, woods and prairies; common throughout, and 

 quite variable. Most of the specimens found in the upper 

 Mississippi Valley and referred to C. cephaloidea previous to 

 1890 belong here. In rich, moist soil in woods the plants are 

 often 2 feet or more in height, the spikes very large and 

 heavy, the foliage lax (var. laxifolia Bailey). In poorer soil 

 or on the open prairies the plants are smaller and more strict 

 in habit. C. alopecoidea Tuck, has been reported from this 

 state, but the specimens so labelled in the I. A. C. herbarium 

 are a lax form of the above species. 



Emmet county, 1878, and many later collections, Cratty; 

 Iowa City, 1893-4, Shimek; Ames, Hitchcock ; Grinnell, 1886, 

 JVbrris; Scott and Muscatine counties, Barnes & Miller ; High 

 Bridge, Dallas county, Julv 6, 1897. and Grand River, June. 

 1890, Shimek ; Spirit Lake, June 24, 1881, Arthur ; Marshall- 

 town. 1897, Pammel. 



