oo NATURAL HISTORY BULLETIN. 



5. S. atrovirens Muhl. Gram., 43 (1817). 



Illus. Flora, i, 269, fig. 630; Gray's Man., 6th ed., 581 ; Arthur, Fl. Iowa, 33; 

 Hitchcock, PI. Ames, 523;Mac Millan, Metas. Minn. Val., 97; Tracy, Fl. 

 Mo., 92; Bessey, Cont. Fl. Iowa, 123; Fink, Iowa Acad. Sci., iv, 105: 

 Brendel, Fl. Peoriana, 62; Wheeler, Fl. Milwaukee Co., Wis., 186; Web- 

 ber, Fl. Neb., 99. 



Throughout the state; very common in low ground or 

 swamps. A broad-leaved species with very numerous small 

 spikelets in dense capitate clusters. The var. pallidus Britton 

 has been found in Minnesota and Nebraska and is to be sought 

 in the northwestern part of the state. 



Woodbine, 1874, Burgess; Ames, 1886, Hitchcock; Musca- 

 tine, Reppsrt; Fayette county, 1894, Fink; Shelby county, 

 June, 1894, Fitzpatrick ; Webster county, 1891, Hitchcock; 

 Grinnell, July, 1895, Johnson; Emmet and Kossuth counties, 

 1897, Cratty ; Scott and Muscatine counties, Barnes & Miller; 

 Charles City, Arthur; Boone, July, 1897, Steele; Birmingham, 

 Aug., 1897, No. 453, Baldwin; Kossuth county, Aug. 21, 

 1897, Pammel ; Nevada, July 2, 1897, Vernon; Mount Pleas- 

 ant, Oct. 1, 1897, Dr. Mitte. 



6. S. lineatus Mich. Fl. Bor. Am., 1, 32 (1803). 



Eriophorum Vinculum Benth. & Hook., Gen. PL, in, 1,052 (1883). 

 Illus. Flora, 1, 270, fig. 635; Gray's Man., 6th ed., 582; Arthur, Fl. Iowa. 33; 

 Hitchcock, PI. Ames, 523; MacMillan, Metas. Minn. Val., 96; Tracy, 

 Fl. Mo., 92; Brendel, Fl. Peoriana, 62; Bruhin, Fl. Wis., 278. 



Low ground, margins of streams and in swamps; not com- 

 mon. This and the following species are often referred to 

 Eriophorum from which genus they differ principally in having 

 the bristles to the akenes much shorter. 



Ames, Hitchcock; Clinton, 1896, Ball; Story county, June, 

 1886, Johnson; Scott and Muscatine counties, Barnes & 

 Miller ; Decatur county, July 2, 1896, Fitzpatrick ; Fort Dodge, 

 July 5, 1897, Shimek; Peru, July 20, 1897, No. 394, Hollings- 

 worth ; Lebar, July 5, 1897, Sample. 



7. S. cyperinus (L.) Kunth. Enum., 11, 170 (1837). 



Eriophorum cypcrinum L. Sp. PI. 2nd ed., 77 (1762). 



