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Vol. XLIV 



THE 



H'A f 



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I 



H'^ 



No. I 



July 1907 



Editors: JOHN M. COULTER and CHARLES R. BARNES 



CONTENTS 



n 



Theo. Holm 



Hybridization and Germ Cells of Oenothera Mutants 



Reginald Rtigglea Gates 



Morphological and Anatomical Studies of the Vegeta- 

 tive Organs of Rhexia 



The Sporangium of the Ophioglossales 



The Roots of Lycopodium pithyoides 



Briefer Articles 



The BUck-fruited Ctataegxis of Western Korth Amerka 



L. L* Burlingame 



Altoa 



C. S. Sargeat 



Current Literature 



Minor Notices 

 Hotes for Students 



Kews 



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The University of CMcago Press 



CHICAGO and IBW YORK 

 Wiliiain Wesley aad S»a, I. *3doa 



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