No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
201. 
202. 
223. 
224. 
225. 
TABLE OF CONTENTS 
—_. ____—_. 
Notes regarding Variability of the Rose Mallows, by A. B. Stout. 
Phytogeographical Notes on the Rocky Mountain Region—VII. 
Formations in the Subalpine Zone, by P. A. Rydberg. 
The Flora of the American Virgin Islands, by N. L. Britton. 
Further Notes on the Structural Dimorphism of Sexual and 
Tetrasporic Plants in the Genus Galaxaura, by Marshall A. 
owe. 
Observations on Tulips, by A. B. Stout. 
Revision of the North American Species of Encalypta, Dorothy 
oker. 
Notes on Plants of the Southern United States—IV, by Francis 
W. Pennell. 
Notes on Plants of the Southern United States—V, by Francis W. 
Pennell. 
Intersexes in Plantago lanceolata, by A. B. Stout. 
The Genus Desmatodon in North America, by R. S. Williams. 
Phytogeographical Notes on the Rocky Mountain Region—VIII. 
Distribution of the Montane Plants, by P. A Rydberg. 
Scrophulariaceae of the Local Flora, by Francis W. Pennell. 
Taxonomic Studies in Vernonia and related Genera, by Henry 
Allan Gleason. 
A brief Conspectus of the Species of Kneiffia, with the Character- 
ization of a new allied poste: by Francis W. Pennell. 
Tulip Droppers, by A. B. Sto 
Some slots ares of the eee Method, by Henry Allan 
Gleaso 
Further Sicceicienciital Studies on ooo in Herm- 
aphrodite Plants, by A. B. Sto 
Observations on Rn Sa Dine in the genus Liagora, by 
Marshall A. How 
ne a ts the Central Rocky Mountain States, by 
Francis W. Pennell. 
Notes on Rene aak by Per Axel Rydberg. 
Scrophulariaceae of the Southeastern United States, by Francis 
Pennell. 
The Land of Ferns. The Habitats and Distribution of the Fern- 
worts of Florida, by John K. Small. 
Calymperaceae of North America, by R. S. Williams. 
Phytogeographical Notes on the Rocky Mountain Region—IX. 
Wooded Formations of the Montane Zone of the Southern 
Rockies, by P. A. Rydberg 
Descriptions of Cuban Plants New to Science, by Nathaniel Lord 
ritton. 
