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Issued November 20, J 902 



CONTENTS 



ON THE DEVELOPMENT OF CERTAIN PIPERACEAE (with plates ix-x). Duncan 



S, Johnson --------.., 



THE STRUCTURE OF THE STARCH GRAIN (with plate Xi and texa figures), 



Henry Kraemer -- 



CONTRIBUTIONS FROM THE ROCKY MOUNTAIN HERBARIUM. IV. Aven Nelson 



BRIEFER ARTICLES. 



A New Hepatic from the Eastern United States (with plate xii). Alexander 

 W^ Evans - - - ... . , . .. 



CURRENT LITER A TURE, 



MINOR NOTICES • • - - - - - - - - 



NOTES FOR STUDENTS -------.. 



NEiVS ............ 



321 



341 

 355 



372 



376 



377 



3«8 



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