152 TWELFTH ANNUAL REPORT. 



S. sylvaticus, L., var. dig-ymis, Boeck. (S. microcarpus, Presl.) Bulrush. 

 Lapham. Pine county, etc., Upliam. 



S. atrovirens, Muhl. Bulrush. 



Common throughout the state. {Mr. Leihera reports in Blue Earth county, besides 

 the type, a variety with the heads less densely clustered than usual, forming a compound 

 panicle.) 



S. polyphyllus, Vahl. Bulrush. 

 Isanti county, Upham. South. 



S. lineatus, Michx. Bulrush. 



Blue Earth county, Leiberg; Minneapolis, Simmons. South. 



S. Eriopliorum, Michx. "Wool-Orass. 



Frequent throughout the state, excepting perhaps southwestward. Blue Earth 

 county, Leihcrg; Minneapolis, Simmons, Kassube; Todd county, etc., Upham; lake of 

 the Woods, Dawson, Macoun. [North of lake Superior, Agassiz.] 



m 



ERIOPHORUM, L. Cotton-Grass. 



E. alpinuin, L. Alpine Cotton-Grass. 

 North of lake Superior, Jiini. 



E. vaginatimi, L. Sheathed Cotton-Grass. 



Throughout the state, excepting far southward. Blue Earth county, Leiberg; Min- 

 neapolis, Kassube; Anoka county, JtiJii; Chisago county (frequent), Upham: [Manitoba, 

 Macoun. | 



[E. Virginicum, L., doubtless will be found in this state, but has not yet been re- 

 ported. It occurs in Wisconsin, Nebraska and Manitoba.] 



E. polystacbyuin, L. Many-stemmed Cotton-Grass. 



Common, or frequent, through the south half of the state, and perhaps farther north. 

 Anoka county, Juni; Minneapolis, Herrick, Simmons; Blue Earth county, Leiberg; 

 Emmet county, Iowa (common), Cratty. It has been noted in its var. angostifolium. 

 Gray, at Minneapolis, Kassube, and in Steele county, Upham. 



E. polystacliyiim, L., var. latifoliuui, Gray. Cotton-Grass. 



Minneapolis. Upham; and probably extending, with the var. angustifolium, through 

 the south half of the state. 



E. gracile, Koch, var. paiiciuervium, En^elm. Graceful Cotton-Grass. 

 Throughout the state. Chisago county (frequent), and Sherburne county, Upham; 



Minneapolis, Simmo?is; Blue Earth county, Leiberg. [Manitoba, Macoun; Emmet county, 

 Iowa (rare), Cratty. \ 



FIMBRISTYIilS, Vahl. Fimbristylis. 



F. capillaris, Gray. Fimbristylis. 

 Lapham. Infrequent. South. 



RHYNCHOSPORA, Vahl. Beak-Rush. 



R. alba, Vahl. Beak-Rush 

 Lapham. Infrequent. South. 



R. capillacea, Torr. Beak-Rush. 



Blue Earth county, Leiberg. Infrequent. South. 



[Cladium mariscoides, Torr., should be looked for in southern Minnesota.] 



