Vol. IV. 
PITTONIA = 
A SERIES OF BOTANICAL PAPERS. 
EDWARD L. GREENE, =- 
Professor of Botany in the Catholic University of America, 
WASHINGTON, D. 
JANUARY-APRIL, 1899. 
= 2 GONTENTS. — 
= Fiasco or New VioLETS, 
New WESTERN SPECIES OF Rosa, 
-Naw  CHORIPETALOUS ExoGENS, 3 
