674 REPORT OF STATE GEOLOGIST. 



Flowers from June until October. 



Tippecanoe (Cunningham) ; Laporte (Barnes) ; White (Hussey) ; 

 Vigo (Blatchley) ; Gibson and Posey (Schneck) ; Noble (Van 

 Gorder) ; Vermillion (Wright) ; Putnam (MacDougal) ; Shriner 

 Lake (Deam); Steuben (Bradner); Kosciusko and Marshall (Coulter). 



HETERANTHERA R. and P. 



H. reniformis R. and P. Mud Plantain. 



Reported only from the southern counties, growing in shallow 

 waters and in mud. The species probably does not extend far 

 northward in our area. 



Flowers in July and August. 



Jefferson (J. M. Coulter); Gibson and Posey (Schneck). 



H. dubia (Jacq.) MacM. Water Star-grass. 



(H. graminea Vahl.) 

 Found throughout the State, growing in quiet water and also on 

 muddy banks. The form growing in the mud is much reduced in 

 size. Usually quite abundant in the stations in which it occurs. 

 Flowers from July through September. 



Laporte (Barnes) ; Putnam (MacDougal) ; Noble (Van Gorder) ; 

 Gibson and Posey (Schneck); Fayette (Hessler) ; Vigo (Blatchley) ; 

 Kosciusko (Coulter). 



JUNCACE^. Rush Family. 



JUNCUS L. 



J. effusus L. Common Rush. Bog Rush. Soft Rush. 



Found throughout the State growing in swamps and moist places. 

 Abundant in all stations from which it is reported. 



Flowers from May until in August. 



Jefferson (Barnes) ; Noble (Van Gorder) ; Decatur (Ballard) ; 

 Lake (Hill) ; Vigo (Blatchley) ; Steuben (Bradner) ; Laporte. 



J. Balticus Willd. Baltic Rush. 



Confined to the southern shores of Lake Michigan. Added to the 

 State flora by Rev. E. J. Hill. A northern shore form, probably 

 not extending far inland in our area. 



Flowering in July. 

 , Lake (Hill). 



