48 



4. Cone-flower and Rosin-weed Colony, Station I, e 



This station was continuous with and just north of the swamp 

 milkweed area (Station I, d) just described. The surface of the 

 ground sloped gently upward toward the north, but none of it was free 

 from crawfish holes, and the ground-water level was not far below. 

 The soil is very dark in color. 



The general appearance of this habitat is shown in Plate V. The 

 large-leaved plants are Silphium terebintlrinaceum, and the heads of 

 the numerous cone-flowers (Lepachys pinnata) show as black points in 

 the picture. The cone-flower was the dominant plant at this time. 

 There were a few scattered plants of Silphium integrifolium and of 

 wild lettuce (Lactnca canadensis). At the time the collecting was done 

 in this area Silphium was not in blossom, and all the flower-collecting 

 was from Lepachys. 



The collections of animals taken here (Nos. 8, 40, and 158) are 

 as follows : 



Collection No. 40 was made by sweeping the vegetation with an in- 

 sect net. No. 8 is a collection made from the flowers of Lepachys'' pin- 

 nata. The nest of Polistes was across the railway track from this 

 station. The abundance of Melissodes obliqua and of the pretty 



