312 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



PuUe, A. ' 



'06. An enumeration of the vascular plants known from Surinam, 

 together with their distribution and synonymy. E. J. Brill: Leiden, 

 1906, pp. 555, 17 pis., map. 



Schomburgk, R. 



'47-'48. Reisen in Britisch-Guiana in den Jahren 1840-44. Leipzig: 

 J. J. Weber, 1847-48, 3 vols, illustr., map. 



Urban, I. 



'03. Flora portoricensis, in Symbolae Antillanae, vol. 4, p. 1-352. Fra- 

 tres Borntraeger: Lipsiae, 1903. 

 Only through Euphorbiaceae. 



Printed June, 1909. 



