Volume 41 May-June, 1941 Number 3 



TORREYA 



A Bi-MoNTiiLY Journal of Botanical Notes and News 



EDITED FOR 



THE TORREY BOTANICAL CLUB 



BY 



WILLIAM J. BONISTEEL 



CONTENTS 



Rhode Island Ferns K. E. Wright and D. L. Crandall 73 



Plants Occurring on Calcareous Rock Outcrops in North 



Carolina H.J. Costing 76 



Liriodendron in the Miocene of America and Eastern Asia. .Edward W. Berry 82 



Growing Cladophora in the Laboratory I. C. G. Cooper 85 



Field Trips of the Club 88 



Proceedings of the Club 102 



News Notes 104 



Published for the Club 



By the Free Press Printing Company 

 187 College Street, Burlington, Vermont 



Entered as second class matter at the post office at Burlington, Vermont, 

 October 14, 1939, under the Act of March 3, 1879 



