TABLE OF CONTENTS 



No. 176. Phytogcographical Notes on the Rocky Mountain Region — 1\'. 

 Forests of the Subalpine and Montane Zone, l)y P. A. Rydberg. 



No. 177. Mosses of Bermuda, by Elizabeth Gertrude Britton. 



No. I7«. Notes on Rosaceae — IX, by P. A. Rydberg. 



No. 179. Studies of West Indian Plants — \I, l)y Nathaniel Lord Britton. 



No. 180. Mosses from the west coast of South America, by R. S. Williams. 



No. iXi. The Origin of Dwarf Plants as shown in a Si)ort of Hibiscus ocuii- 



roseus, by A. B. Stout. 



No 182. Notes on Rosaceae — X, by P. A. Rydberg. 



No. 183. Studies on West Indian Plants — VII, by Nathaniel Lord Britton 



No. 184. Mosses of the Philippine and Hawaiian Islands collected by the 

 late John B. Leiberg, by R. S. Williams. 



No. 185. Phytogcographical Notes on the Rocky Mountain Region — \'. 

 Grasslands of the Subalpine and Montane Zones, by P. A. Rydl erj^. 



No. 186. Notes on Trichomancs — I. The Identity of Trichomancs pyxidi- 



ferum L., by Margaret Slosson. 

 No. 187. Notes on Plants of the Southern United States, l)y Francis W. 



Pennell. 



No. 188. Not.'s on Species of Halymenia, by F. S. Collins and M. A. Howe. 



No. 189. Peruvian Mosses, by R. S. Williams. 



No. 190. Phytogeographical Notes on the Rocky Mountain Region — \I. 

 Distribution of the Subalpine Plants, by P. A. Rydberg. 



No. 191. Notes on Plants of the Southern United States — II. by Francis W. 



Pennell. 

 No. 192. Studies of West Indian Plants — \TII, by Nathaniel Lord Britton. 

 No. 193. A Note on th^ Structural Dimorphism of Sexual and Tetrasporic 



Plants of (lalaxaura obtusata. by Marshall A. Howe. 



No. 194. El Genero Rynchospora V'ahl, en Cuba, by Nathaniel Lord Britton. 



No. 195. Studies of West Indian Plants — IX, by Nathaniel Lord Britton. 



No. 195. N'jtes on Rosaceae — XI, by P. A. Rydberg. 



No. 197. Notes on North American Species of Riccia, by Marshall A. Howe. 



No. 198. Fertility in Cichorium Intybus: The Sporadic Occurrence of Self- 

 fertile Plants among the Progeny of Self-fertile Plants, by A. B. 

 Stout. 



No. 199. Notes on Plants of the Southern United States — III, by Francis 

 W. Pennell. 



No. 200. Fertility in Cichorium Intybus: Self-compatibility and Self- 

 incompatibility among the Offspring of Self-fertile Lines of Des- 

 cent, by A. B Stout. 



