PLANTS OF ILLINOIS. 



45 



var. megacephalus, Ton*. C. & N. 



Menard county, Hall ; and northward. 



brachycarpns, Engelm. 



Moist woods and prairies. Scarce. 



Canadensis, J. Gay. : 



var. longicandatus, Eng. N. 



Kankakee county. Hill ; McHenry, Vasey. 



var. brachycephalus, Eng. N. 



Peoria. county, Brendel, and probably northward. 



var. coarctatus, Engelm. N. 



Kankakee county. Hill. 



PONTEDERIACEiE. 



PONTEDERIA 



cordata, L. 



Ponds. Infrequent. 



HETER ANTHER A 



reniformis, Ruiz & Pav. S. 



Wabash county, Schneck. 



limosa, Vahl. 

 Illinois — Gray 's Manual. 



SCHOLLERA 



graminea, Willd. 



In ponds and slow streams. Frequent. 



COMMELYNACEiE. 



COMMELYNA 



erecta, L. S. 



Wabash county, Schneck. 



Virginica, L. C. & S. 



Henderson county, (in sandy barrens) ; Mason, 

 Mead ; and southward. 



Cayennensis, Richard. S. 



Madison county, Hall : and southward. 

 TRADESOANTIA 

 Virginica, L. 

 Open woods and prairies. Common. 



pilosa, Lehm. C. & 8. 



Hancock county, Mead . and southward. 



XYRIDACEiE. 



XYRIS 



flexuosa, Muhl. 



Calumet, Cook county, (rare), Babcock : Kanka- 

 kee, Hill ; Mason, Hal!. Rare. 



CYPERACE^E. 



CYPERUS 



flavescens, L. S. 



Low grounds. Jonesboro, Union county, Vasey. 



diandrus, Torr. 



Low grounds. Common. 



erythrorhizos, Muhl. 



River banks, throughout. Frequent. 



inflexus, Muhl. 



River banks, close to the water. Common. 



acuminatus, Torr. C. & S. 



Low grounds, from Henderson and Peoria coun- 

 ties southward. Rare. 



phymatodes, Muhl. 



Wet i>laces. Frequent. 



strigosus, L. 



Low grounds. Common. 



Michauxianus, Schultes. 



Low grounds. Frequent. 



Engelmanni, Steud. 



Low grounds. McHenry county, Vasey ; banks 

 of Cahokia creek, St. Clair county, Engelmann. 



Schweinitzii, Torr. C. & N. 



Sandy river banks, from Mason county north- 

 ward. Frequent. 



filiculmis, Vahl. 



Barrens. Frequent. 



ovularis, Torr. C. & S. 



Barrens. Peoria county, Brendel ; and south- 

 ward. 



KYLLINGIA 



pumila, Michx. C. & S. 



Low grounds. Menard county, Hall; and south- 

 ward. 



DULICIIIUM 



spathaceum, Pers. 



Borders of ponds. Frequent. 



FUIRENA 



s<iuarrosa, Michx. S. 



Jonesboro, Union county, Vasey. 

 HEMICARPHA 



subsquarrosa, Nees. 



Sandy river banks, close to the water. 



ELEOCHARIS 



quadrangulata, R. Br. S. 



St. Clair county, Brendel. 



