MEMO IRS 



OF TITK 



rORREY BOTANICAL CLUB. 



Vol [[. 



No. 4 



THE GKNX^S POLVGALA IX NORTH AMERICA 



lU W.\f. K. Wi[Efc:LucK 



Tlicrc being no monoi:^raph of our species of Polygtxla pub- 

 lished since tlic treatment of the c^cnus in Torrey and Gray's 

 Flora of North America, in i838-l840» I undertook theirstudy 

 about a \-ear a^'o. at the suij^estion of Dr. N. L. Britton. I 



have endeavored to see as many specimens of the species as 

 could be found in the Largest American Herbaria, and Dr. 

 Britton has examined most of the types preserved in Europe. 

 The American collections whicli T have examined are noted 

 at the close of this paper. I would most cordially thank t])e 

 gentlemen, who own or control these collections, for their kind- 

 ness in allowing me to examine them. All the specimens 

 seen are geographically recorded in the following pages, with 

 the intention of making the work a contribution to the subject 

 of geographical distribution, as well as a monograph of the 

 species themselves. 



The genus was published by Linn;eus, in Gen. PI. Ed. T, 

 p. 214, and IS attributed to Dioscorides by Prof. P2. L. Greene, 



(Fl. Fran. 93). 



The following key is planned to lead to a ready deter- 

 mination of the species. 



