TABLE OF CONTENTS 



Some plants from Tropical Sea Gardens, by Marshall Avery Howe. 



Scrophulariaceae of Colombia — I, by Francis W. Pennell. 



A Graft-Chimera in the Apple, by A. B. Stout. 



A Botanical Excursion to the Big Cypress, by John Kunkel Small. 



"Veronica" in North and South America, by Francis W. Pennell. 



Types of Flowers and Intersexes in Grapes with reference to Fruit 



Development, by A. B. Stout. 

 Notes on Rosaceae — XIII, by Per Axel Rydberg. 

 A Rearrangement of the Bolivian Species of Centropogon and Sipho- 



campylus, by H. A. Gleason. 

 Sterility and Fertility in Species of Hemerocallis, by A. B. Stout. 

 Phytogeographical Notes on the Rocky Mountain Region— X. 



Grasslands and other open Formations of the Montane Zone of the 



Southern Rockies, by Per Axel Rydberg. 

 Studies of West Indian Plants — X, by Nathaniel Lord Britton. 

 Cyclic Manifestation of Sterility in Brassica pekinensis and B. chi- 



nensis, by A. B. Stout. 

 Studies of West Indian Plants — XI, by Nathaniel Lord Britton. 

 Alternation of Sexes and intermittent Production of Fruit in the 



Spider Flower (Cleome spinosa), by A B. Stout. 

 Sterility in Lilies, by A. B. Stout. 

 Notes on Rosaceae — XIV, by Per Axel Rydberg. 



The vegetational History of the Middle West, by Henry Allan Gleason. 

 Evolution and Geographical Distribution of the genus Vernonia in 



North America, by Henry Allan Gleason. 

 Notes on Fabaceae — I, by Per Axel Rydberg. 

 The Taxonomic and Morphologic Status of Ophioglossum Alleni 



Lesquereux, by Arthur Hollick. 

 Studies in tropical Ascomycetes — II. An interesting Xylaria from 



Porto Rico, by Fred J. Seaver. 

 Notes on Fabaceae — II, by Per Axel Rydberg. 

 Studies of Lythrum Salicaria — I. The Efficiency of Self-Pollination, 



by A. B. Stout. 

 The Physiology of Incompatibilities, by A. B. Stout. 

 Genera of North American Fabaceae— I, by Per Axel Rydberg. 



