TABLE OF CONTENTS 



No. 



No. 



.So 



44 



The Genus Ceratopteris: A Preliminary Revision, by 



Ralph Curtiss Benedict. 

 The Crataegi of Mexico and Central America, by W. \\ . 



Eggleston. 

 Studies on the Rocky Mountain Flora — NIN, by Per Axel 



Rydberg. 

 Studies on the Rocky Mountain Flora — NN, by Per Axel 



Rydberg. 

 Monographia Generis Arthroclianthi Baill., by B. P. G. 



Hochre'utiner. 

 Studies on the Rocky Mountain Flora — NNI, by Per Axel 



Rydberg. 

 Sphaerocarpos hians sp. now, with a Revision of the Genus 



and Illustrations of the Species, by Caroline Coventry 



Haynes. 

 Iowa Discomycetes, by Fred Jay Seaver. 

 Studies on the Rocky Mountain Flora — XXII, by Per Axel 



Rydberg. 

 Studies of West Indian Plants — III, by Nathaniel Lord 



Britton. 

 Notes on Rosaceae — III, by Per Axel Rydberg. 

 Studies on the Rocky Mountain Flora — XXIII, by Per 



Axel Rydberg. 

 Notes on Rosaceae — IV, by Per Axel Rydberg. 

 Additions to the Flora of Peninsular Florida, by John K. 



Small. 

 Studies on the Rocky Mountain Flora — XXIV, by Per 



Axel Rydberg. 

 Studies on the Rocky Mountain Flora — XXV, by Per Axel 



Rydberg. 

 Notes on Rosaceae — V, by Per Axel Rydberg. 

 Results of a Preliminary Study of the so-called Kenai Flora 



of Alaska, by Arthur Hollick. 

 • The Paleobotanical Collections of the New York Botanical 



Garden, by Arthur Hollick. 

 Notes on Rosaceae — VI, by Per Axel Rydberg. 

 Phycological Studies — V. Some Marine Algae of Lower 



California, Mexico, by Marshall Avery Howe. 

 Studies of West Indian Plants — IV, by Nathaniel Lord 



Britton. 

 List of Plants Collected on the Peary Arctic Expedition of 



1905-06 by Dr. L. J. Wolf, and of 1908-09 by Dr. J. W. 



Goodsell, by P. A. Rydberg. 

 Studies in Pyrophilous Fungi — III. The Viability of the 



Spores of Pyronema, by Fred J. Seaver. 

 The Individuality of the Chromosomes and their Serial 



Arrangement in Carex aquatilis, by Arlow Burdette 



Stout. 



