No. 1 6. New q.r Noteworthy North American Phanerogams — III. By 



N. L. Britton (1890.) 

 No. 17. The Flora of the Desert of Atacama. By Thos. Morong 



(1891). 

 No. 18. Contributions to American Bryology — II. By Elizabeth G. 



Britton (189 1). 

 No. 19. Notes on North American Halorageae. By Thos, Morong 



(1S91). 

 No. 20. New or Noteworthy North American Phanerogams — IV. By 



N. L. Britton (1891). 

 No. 21. Notes on the North American Species of Eriocauleae. By 



Thos. Morong (1891). 

 No. 22. New or Noteworthy North American Phanerogams — V. By 



N. L. Britton (1891). 

 No. 23. The American Species of the Genus A?iemone and the Genera 



which have been referred to it. By. N. L. Britton (1891). 

 No. 24. Review of the North American Species of the Genus Xyris. 



By Heinrich Ries (1892). 

 No. 25. A Preliminary List of the Species of the Genus Meibomia 



occurring in the United States and British America. By 



Anna M. Vail (1892). 



