OF DENISON UNrvERSITY. 87 



XCI. PONTEDERIACEAE. 



366. PONTEDERIA L. 



757. P. cordata L. 



Growing in shallow water in the eastern part of the Old Reser- 

 voir. August 26, 1890; August 8, 1891. 



367. Heteranthera Rinz and Pav. 



758. H. graminea Vahl. 



Growing both in shallow water and along the muddy banks of 

 New Reservoir and also in the Ohio Canal at Newark and other places. 

 August 4, 1890; Augusts, 1891. 



XCII. COMMELINACEAE. 

 368. Tradescantia L. 



759. T. Virginica L. Common Spiderwort. 



Rich sfoil, especially along the edges of swamps, rare; Newark 

 township. May 25, 1890. 



XCIII. JUNCACEAE. 

 369. JuNCUS Tourn. 



760. J. effusus L. Common or Soft Rush. 

 Moist soil; Licking Reservoir. August 22, 1890. 



761. J. filiformis L. 

 Moist soil. May 24, 1890. 



762. J. tenuis Willd. 



Fields and moist places, common. May 27, 1890. 



763. J. bufonius L. 



Moist soil along trodden paths; Alexandria. June 12, 1891. 



764. J. acuminatus Michx. 



Wet places, somewhat common; Granville and Licking Reser- 

 voir. Reported by Mr. W. C. Werner. 



765. J. nodosus L. Var. megacephalus Torr. 

 Licking Reservoir. Reported by iVIr. W. C. Werner. 



370. LUZULA D C. 



766. L. vernalis D C. 



Somewhat rare, banks near Granville. May ij 1891. 



