LIBRARY 



^„ NEW YORK 



TABLE OF CONTENTS BOTAN|c 



GARD! 



No. 51. Notes on Bahaman Algae, by Marshall A. Howe. 

 No. 52. The Polyporaceae of North America — VII. The Genera 

 Hexagona, Grifola, Romellia, Coltricia and Coltriciella, 

 by William Alphonso Murrill. 

 No. 53. Delta and Desert Vegetation, by Daniel Trembly MacDougal. 

 No. 54. Chemical Notes on "Bastard" Logwood, by Benjamin C. 



Gruenberg and William J. Gies. 

 No. 55. Studies on the Rocky Mountain Flora — XI, by Per Axel 



Rydberg. 

 No. 56. The Polyporaceae of North America — VIII. Hapalopilus, 

 Pycnoporus and New Monotypic Genera, by William Al- 

 phonso Murrill. 

 No. 57. Studies in the Asclepiadaceae — VIII. A New Species of 

 Asclepias from Kansas and Two Possible Hybrids from 

 New York, by Anna Murray Vail. 

 No. 58. Relationship of Macrophoma and Diplodia, by Julia T. 



Emerson. 

 No. 59. Studies on the Rocky Mountain Flora — XII, by Per Axel 



Rydberg. 

 No. 60. The Polyporaceae of North America — IX. Ionotus, Sesia 



and Monotypic Genera, by William Alphonso Murrill. 

 No. 61. On Pisonia Obtusata and its Allies, by N. L. Britton. 

 No. 62. Studies on the Rocky Mountain Flora — XIII, by Per Axel 



Rydberg. 

 No. 63. Chemical Stimulation of a Green Alga, by Burton Edward 



Livingston. 

 No. 64. The Occurrence and Origin of Amber in the Eastern United 



States, by Arthur Hollick. 

 No. 65. The Polyporaceae of North America — X. Agaricus, Len- 

 zites, Cerrena, and Favolus, by William Alphonso Murrill. 

 No. 66. Studies on the Rocky Mountain Flora— XIV, by Per Axel 



Rydberg. 

 No. 67. Phycological Studies — I. New Chlorophyceae from Florida 

 and the Bahamas, by Marshall Avery Howe. 



