34 MISSOURI BOTANICAL GARDEN. 
of his private herbarium a separate name. As he has not 
paid any attention to previously published names except 
the Linnean ones, his nomenclature cannot be regarded as 
resting on scientific principles and may therefore be passed 
over, as has been done by the editors of the Index Kewen- 
sis. 
In the course of the study of the genus, the following 
herbaria have been consulted: the Gray Herbarium and the 
herbarium of the Arnold Arboretum, Harvard University, 
the herbarium of the Missouri Botanical Garden, St. Louis, 
the herbarium of Columbia University and of the New York 
Botanic Garden, the herbarium of the Academy of Natural 
Sciences, Philadelphia, the National Herbarium at Wash- 
ington, the Biltmore Herbarium, Biltmore, N. C., the her- 
barium of the Royal Botanic Museum at Berlin, the herba- 
rium of the University of Goettingen (including the Grise- 
bach Herbarium), the herbarium of the Royal Botanic 
Garden at Kew, the herbarium of the Museum of Natural 
History at Paris, and the herbarium of the Botanic 
Garden at Brussels. From the herbarium of the Imperial 
Botanic Garden at St. Petersburg and from the Herbier 
Boissier at Chambézy near Geneva, a considerable number 
of specimens, partly types, were kindly sent to me for ex- 
amination. I beg to acknowledge my sincerest thanks to all 
those in charge of the above named institutions. I am also 
greatly indebted to Professor E. Koehne of Friedenau- 
Berlin, who kindly loaned me the Loniceras of his herba- 
rium and has furnished me moreover with much valuable in- 
formation. I am likewise under obligation for material and 
information to Mr. George Nicholson of Kew, Mr. M. L. 
de Vilmorin of Paris, Mr. H. Zabel of Gotha, formerly of 
Muenden, Mr. E. Wolf of St. Petersburg, Mr. J. Kessel- 
ring of St. Petersburg, Mr. E. Rettig of Jena, Mr. L. 
Beissner of Bonn, Mr. A. Purpus of Darmstadt, Professor 
J. Battandier of Alger-Mustapha, Mr. W. Lipsky of St. 
Petersburg and Mr. Joaquim de Mariz of Coimbra. 
4 ) 
