605 



Umbelliferae 



139. Osuwrhiza longistylis (Torr.) DC. 



About thickets; rare. 



140. Ciciita luaculata L. 



In the swamp meadow and moist parts of the meadow ; fre- 

 quent. 



141. Sium ciciitaefoUwn Schrank 



In the reed swamp and swamp meadow. 



142. O.vy polls rigidior (L.) Coult. & Rose 



About thickets; somewhat rare. 



Cornaceae 



143. Conius Ainoinuin Mill. 



In wet thickets along the marsh border, ditches, depressions, 

 etc. ; frequent. 



144. C. stolonifera Michx. 



With C. Amoiimvi; somewhat rare. 



145. C. paniculata L'Her. 



With C. Amommn; fairly frecpient. 



Priimilaceae 



146. Lysimachia thyrsiUora L. 



In the reed swamp; very rare. 



147. Steironeuia ciliatmn (L.) Raf. 



In shaded places in the meadow ; rare. 



Oleoceac 



148. Pvaxinus americana L. 



Here and there in the small "islands" of forest. 



149. Fraxinus nigra Marsh. 



With the last species, but in wetter soil. 



Gentian aceae 



150. Gentiana Av.dreivsii Griseb. 



In moist grassy thickets, west of Braeside ; rare. 



Asclcpiadaceae 



151. Asclepias incarnata L. 



Along vSkokie Stream and in various other wet places ; common. 



