1888.] NATURAL SCIENCES OF PHILADELPHIA. 13 



The second group to which allusion has been made — those in which 

 the resemblance is between related plants, may be fairly illustrated 

 by the resemblance between Nepeta Gleclioma and Lamium am- 

 plexicaule, especially when (as is often the case in Nepeta) the petioles 

 are very much reduced in length. 



Another unusual resemblance comes to mind. One may easily 

 understand why the cup found about the base of the stigma in so 

 many of the Lobeliaceae should be so exactly repeated in the allied 

 order of Goodeniaceae. But how are we to explain its appearance 

 in Gaura (one of the Onagraceae) which can hardly be regarded as 

 closely related to either of the above orders. These resemblances 

 and the questions growing out of them are to be further considered 

 in a paper in course of preparation. 



Messrs Lawrence J. Morris, Stewart Cidin and Roberts LeBoutil- 

 lier were elected members. 



The following were ordered to be printed : — 



