PREFACE. V 



my own drawings and photograplis ; but for most of tlie wood-cuts I 

 am indebted to Baillon {Histoire des Plantes\ Figuier {Ilistoire des 

 Plantes), and Woodville {Medical Botany). Those of Clematis Vir- 

 giniana and Anemone jxitens, var. jyuttalliana, were kindly placed 

 at my disposal by Professor J. U. and Mr, C. G. Lloyd {Drugs and 

 Medicines of N^orth America, now in course of publication). 



To my friend Dr. jST. L. Britton, of Columbia College, I am much 

 indebted for valuable suggestions, and for affording me every assist- 

 ance required in consulting the extensive herbarium of that institution ; 

 and to my friends Dr. Thomas F. Wood, Wilmington, N. C, and Dr. 

 II. li. Rusby, Detroit, Mich., I extend my thanks for recent specimens 

 required to illustrate the work. 



L. J. 



323 West 27th St. , New York. 

 December, 1884. 



