THE FLORA OF SCOTT AND MUSCATINE COUNTIES. 



824. J. nodosus, L., var. megacephalus, Torr. 

 Wet grounds ; common. 



825. J. Canadensis, J. Gay. 

 Muscatine county ; infrequent. 



Luzula, DC. Wood Rush. 



826. Z. re ma lis, DC. 



Moist sandy soil at Wild Cat Den. 



827. L. campestris, DC. 

 Woodlands ; infrequent. 



TYPHACE^E. 



Typha, Tourn. 



828. T. latifolia, L. Cat-tail. 

 Sloughs ; common. 



Sparganium, Tourn. Burr-reed. 



829. S. eurycarpum, Engelm. 

 Marshy places ; rather frequent. 



830. .S. simplex, Huds., var. androdadam, Engelm. 



Marshy places. Along Cedar River in Lake T'w'p., Musca- 

 tine county, June, 1894. Atalissa, September, 1896. In- 

 frequent in Scott county. 



ARACEiE. 



Arisaema, Martins. 



831. A. tryphyllum, Torr. 



Moist rich woods ; frequent. 



832. A. Dracontium, Schott. Dragon-root. 

 Low grounds along rivers ; frequent. 



Symplocarpus, Salisb. 



833. S.foetidus, Salisb. Skunk Cabbage. 

 Swampy grounds ; infrequent. 



Acorus, L. 



834. A. Calamus, L. 



Swampy grounds ; infrequent. 



LEMNACE^:. 

 Spirodela, Schleiden. 



835. S. polyrrhiza, Schleiden. 

 Ponds ; common. 



