46 



CATALOGUE OF THE 



obtusa, Schultes. 



Wet places. Common. 



Engelmanni, Steud. 



Differs from the last in its cylindrical spikes, 

 shorter bristles and always 2-cleft style. Missis- 

 sippi bottoms opposite St. Louis. Enge'inann. 



var. detonsa, Gray. 



Bristles wanting, or only their bases present. 

 Spikes sometimes proliferous at base. Missis- 

 sippi bottoms 1 mile south of Oqnawka. 



palustris, R. Br. 



Wet places. Common. 



Wolfii, Gray. 



"Perennial, with very slender creeping rhizomes 

 in small, scattered tufts : culm a foot high, slen- 

 der, pale-glaucous, two-edged, flat on one side, 

 convex on the other, faintly striate on both, 

 sheath with obliquely truncate hyaline opening : 

 spike ovate-oblong, acute : scales oblong-ovate, 

 obtuse, scarious, pale tinged with purple ; style 

 :> -parted : achenium obovate. somewhat shining, 

 faintly costate with about 9 ribs, the spaces be- 

 tween the ribs transversely marked with dotted 

 lines, tubercle small, depressed-truncate and with 

 the center more or less beaked : bristles of the 

 perigynium (always?) none." 



Margins of ponds. Peoria county, Brendel ; 

 Fulton, Wolf; Menard, Hall. 



compressa, Sullivant. C. & N. 



Wet places, from Menard county northward. 



intermedia, Schultes. C. & N. 



With the last. 



tenuis, Schultes. 



Wet places. Common. 



acicularis, R. Br. 



Margins of ponds. Common. 



5CIRPUS 



pauciflorus, Lightfoot N. 



Wet places. McHenry county, Vasey. 



caespitosus, L. N. 



McHenry county, Vasey. 



pungens, Vahl. 



Wet places. 



fluviatilis, Gray. 



C. &N. 



Margins of ponds and streams, from Menard 

 county northward. 



atrovirens, Muhl. 

 Wet prairies. 



polyphyllus, Vahl. 



Wet places. 

 Vasey. 



Frequent. 



s. 



St. Clair county, Brendel : S. 111. 



validus, Vahl. 



Ponds. 



Frequent. 



Common. 



debilis, Pursh. 



Hancock county, Mead : Menard, Hall. 



supinus, L., var. Hallii, Gray. 



Mason county, Hall. 



lineatus, Michx. 



Low grounds. Common, except at the north. 



Eriophorum, Michx. 



Wet places. Frequent. 



ERIOPHORUM 



Virginicum, L. 



Near Chicago, Babcock. 



polystachyon, L. N. 



Bogs. Common near Chicago, Babcock ; Win- 

 nebago county, Bebb ; McHenry, Vasey. 



gracile, Koch. N. 



Bogs. Peoria co., Brendel : McHenry, Vasey. 

 FIMBRISTYLIS 



spadicea, Vahl., var. castanea, Gray. 



Sandy low grounds. Near Chicago, Babcock ; 

 Kankakee county. Hill ; Henderson : St. Clair, 

 Brendel. Hare. 



laxa, Vahl. 



Illinois — Gray's Manual. 



autumnalis, Roem. & Schult. 



Margins of streams and ponds, with Cvperus 

 ixflexus and Eragrostis reptaxs. 



capillaris, Gray. 



Sandy barrens. 



RHYNCHOSPORA 



cymosa, Xutt. 



Kankakee county, Hill. 



alba, Vahl. 



Bogs. Peoria co., Brendel ; 



capillacea, Torr. 



Elgin, Kane county, Vasey 



glomerata, Vahl. 



Near Chicago. Babcock ; Kankakee co., Hill. 



corniculata, Gray. S. 



Mound City, Pulaski county, Vasey. 



Scan 



N. 



McHenry, Vasey. 

 St. Clair. Brendel. 



SCLERIA 



triglomerata, Michx. 



Prairies. 



Frequent. 



