Reprinted from the Botanical Gazette 46: 401-409, December 190S 



BRYOLOGICAL PAPERS. II. THE ORIGIN 

 OF THE CUPULE OF MARCHANTIA 



CONTRIBUTIONS FROM THE HULL BOTANICAL LABORATORY 120 



(with fourteen figures) 



CHARLES R. BARNES and W. J. G. LAND 



PRINTED AT THE UNIVERSITY OF CHICAGO PRESS 



