Vol. 29 July-August, 1929 No. 4 



TORREYA 



A Bi-MoNTHLY Journal of Botanical Notes and Nr.ws 



EDITED FOR 



THE TORREY BOTANICAL CLUB 



BY 



GEORGE T. HASTINGS 



John Torrey, 1796-1873 



CONTENTS 



The Trap of Utricularia, R. Darnley Gibbs 85 



The Evolution and Classification of Roses, T. D. A. Cockerell 97 



Three Shale-slope Plants in Maryland, Edgar T. Wherry 104 



Field Trips of the Club 108 



Proceedings of the Club 116 



News Notes 121 



Published for the Club 



Bv The George Banta Publishing Company 

 450-454 Ahnaip Street, Menasha, Wisconsin 

 Entered as second class matter at the post office at Menasha, Wisconsin, under the 

 Act of March 3, 1879. 



