STATE GEOLOGIST. 151 



E. palustris, R. Br., var. glaucescens. Gray. Spike-Rush. 

 Minneapolis, Kassuhe. 



E. compressa, Sullivant. Spike-Rush. 



Blue Earth county, I/eiberfiT. [Emmet county, Iowa (rare), Cratty.] South. 



E. intermedia, Schultes. Spike-Rush. 



Lapham. Blue Earth county, Leiherg. Probably throughout the state. 



E. tenuis, Schultes. Spike-rush. 



Laiiham. Blue Earth county (frequent in peat-bogs), Leiberg. [Devil's lake, 

 Dakota, Oeyer.] 



E. acicularis, R. Br. Spike-Rush. 

 Common throughout the state. 



E. Wolfti,* Gray. Wolf's Spike-Rush. 



Collected by Mr. R. I. Cratty on wet prairies in Emmet county, Iowa, adjoining the 

 south line of Martin and Jackson counties in Minnesota, where It may also be confi- 

 dently looked for ; determined by Mr. William Boott. 



E. paiiciflora, Watson. (Scirpus pauciflorus, Li^htfoot.) Spike-Rush. 

 Lake Superior and lake of the Woods, Macoun. North. 



SCIRPUS, L. Bulrush or Club-Rush. 



S. caespitosiis, L. Bulrush or Club-Rush. 



North and northwest of lake Superior, Macoun; doubtless in northern Minnesota. 



S. pungen.s, Yahl. Bulrusb. 



Common throughout the state, excepting perhaps northeastward. 

 S. Torreyi, Oiney. Torrey's Bulrush. 



Lapham. Infrequent. 

 S. laciistris, L. (S. validus, Vahl.) Great Bulrush. "Black Rush." 



["Tule" in California (S. lacustris, L., var. occidentalis, Watson).] 



Abundant throughout the state. "In common use among the Indians for making 

 mats." Parry. 



S. clebilis, Pursh. Bulrush. 



Lapham. [Also in the Wisconsin catalogue, probably on Dr. Lapham's authority ; 

 and in Nebraska, Aughey.] 



[S. maritimus, L., was collected by Gcycr at Devil's lake and on the Sheyenne and 

 James rivers, in Dakota. It will probably be found in the Eed river valley in Minnesota.] 



S. fliiviatilis. Gray. River Club-Rush. 



Through the south half of the state, and in the Red river valley. Minneapolis, 

 Roberts; Blue Earth county, Leiberg; Emmet county, Iowa (common), Cratty; Pembina, 

 Chicliering, 



*Eleocharis Wolfii, Gray. Khizomes very small, creeping, perennial, forming 

 small scattered tufts; culm a foot high, slender, pale-glaucescent, striate, two-edged, 

 one side flat, the other convex ; sheath obliquely truncate, hyaline above : spike ovate - 

 oblong, acute ; scales oblong-ovate, obtuse, scarious, pale purple ; style 3-parted ; 

 achenium pyriform, shining, having about 9 nearly equidistant obtuse ribs, with trans- 

 verse wrinkles between; tubercle small, depressed, truncate, more or less apiculate ; 

 bristles of the perigynium [always?] none.— [First known from Illinois.] The spike, as 

 to form and imbrication of the scales, is much as in E. tenuis and K. acicularis, etc. ; but 

 the achenium, with its several longitudinal ribs and delicate transverse lineation, is 

 upon the plan of E. acicularis. This renders the species a very peculiar and distinct 

 one. Gray, Proc. Amer. Acad., vol. x, p. 77, as translated by Arthur, Contributions to 

 the Flora of Iowa, No. VI. 



