604 



Violaceae 



126. Viola cucidlata Ait. 



In the moister parts of the meadow ; common. 



127. V. papilionacea Pursh 



In smiilar situations; common. Much of the material slightly- 

 different from the typical form; but Professor Ezra Brainerd, 

 to whom some living specimens from Skokie Marsh were sent a 

 year ago for cultivation in his own garden, kindly informs me 

 that he considers them to be V. papilionacea. 



128. V. conspersa Reichenb. 



In the meadow; frequent. 



Lythraceae 



129. Decodon verticillatus (L.) Ell. 



In the reed swamp; found at one station west of Glencoe. 

 Its tough roots were observed in several cases to have impeded 

 very effectively the progress, through the soil, of the stem-tubers 

 of Sagittaria and Sparganiinn. 



Onagraceae 



130. Liidvigia polycarpa Short & Peter • 



In the reed swamp and swamp meadow ; common. 



[31. L. pahistris. (L.) Ell. 



In the reed swamp and swamp meadow ; very abundant. 



132. Bpilobiitm angustifolinui L. 



In the outer part oi the meadow, west of Glencoe; rare. 



133. Bpilobiiim coloratum Muhl. 



In the swamp meadow ; common. Appearing to pass by vari- 

 ous intergradations into the next species. 



134. E. adenocaulon Haussk. 



With B. coloratum; common. 



135. Oenothera nmricata L., var. canesccns (T. & G.) Robinson 



In open places in the swamp meadow ; occasional. 



Haloragidaceae 



136. Myriophylluni heterophyllum Michx. 



In Skokie Stream; abundant in 1912. 



137. M. luunile (Raf.) Morong 



In the Skokie Stream; very abundant In 191 1, but rare in 

 1912, having been almost entirely replaced by the above species. 



138. Proserpinaca palustris L. 



In the reed swamp and swamp meadow ; very abundant. 



