Volume LXVII Number i 



THE 



Botanical Gazette 



Editor: JOHN M. COULTER 



JANUARY 1919 



Oenothera rubrinervis, a Half Mutant - - - - Hugo DeVries i 



Notes on American Willows. III. A Conspectus of American Species 

 and Varieties of Sections Reticulatae, Herbaceae, Ovalifoliae, and 

 Glaucafe -----___ Camillo Schneider 27 



Morphology of the Genus Actinomyces. I - - - Charles Drechsler 65 



Protomarattia, a New Genus of Marattiaceae, and Archangiopteris 



Bunzo Hayata 84 

 (With Plate I and three figures) 



Current Literature 



Book Reviews ----------- 93 



Fossil plants 



Notes for Students ---------- Q5 



The University of Chicago Press 



CHICAGO, ILLINOIS, U.S.A. 



THE CAMBRIDGE UNIVERSITY PRESS, London and Edinburgh 



THE MARUZEN-KABUSHIKIKAISHA, Tokyo. Osaka. Kyoto. Fukuoka. Sendai 



THE MISSION BOOK COMPANY, Shanghai 



