672 REPORT OF STATE GEOLOGIST. 



W. Brasiliensis Wedd. 



In similar situations as the preceding, but much less common, and 

 apparently confined to the central and northern counties of the 

 State. This species floats on the surface of the water. 



Flowers in June and July. 



Hamilton (Wilson). 



XYRIDACE.E. Yellow-eyed Grass Family. 



XYRIS L. 



X. flexuosa Muhl. Slender Yellow-eyed Grass. 



Found in swamps and bogs in the northern counties of the State, 

 and probably occurring sparingly throughout our area. While fre- 

 quently met, it is abundant in none of its stations. 



Flowers from July until September. 



Laporte (Barnes) ; Lake (Hill) ; Kosciusko (Coulter). 



ERIOCAULACE^ Pipewort Family. 



ERIOCAULON L. 



E. septangulare With. Seven-angled Pipewort. 



Found quite commonly in the northern counties in still waters 

 and on muddy banks. When growing in the mud the weak scapes 

 are from one to eight inches long; when submerged they vary in 

 length from four to ten feet. 



Flowers from July through October. 



Laporte (Hill) ; Noble (Van Gorder) ; Steuben (Bradner) ; 

 Round Lake (Deam). 



COMMELINACE^E. ' Spiderwort Family. 



COMMELINA L. 



C. nudiflora L. Creeping Day-flower. 



Reported only from the southern counties as growing somewhat 

 commonly along streams. The species probably extends but a short 

 distance northward in the State. 



Flowers in July and September. 



Gibson and Posey (Schneck). 



