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VOLUME LXV NUMBER 1 
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THE 
BOTANICAL GAZETTE 
JANUARY 17978 
A CONSPECTUS OF MEXICAN, WEST INDIAN, CENTRAL 
AND SOUTH AMERICAN SPECIES AND VARIETIES 
OF SALIX 
CAMILLO SCHNEIDER 
In March 1917, at the request of Professor SARGENT, director of 
the Arnold Arboretum, I commenced a study of the American 
willows. A monograph of the genus Salix as far as it is repre- 
sented in America’ is certainly badly needed, but the attempt to 
investigate thoroughly the numerous species and forms described 
since ANDERSSON wrote his review in 1868 will prove a difficult 
task. Itis not without a great deal of hesitation, therefore, that 
I have undertaken it, and I venture to ask the assistance of every 
one interested in the study of willows. I have already made a 
rather extensive investigation of the forms belonging to the PLEt- 
ANDRAE group (sect. NIGRAE, TRIANDRAE, PENTANDRAE subsect. 
Lucmwar, and BoNPLANDIANAE) and to sect. LoncIFoLIar. At 
present I am occupied with the species of the sect. ARTICAE, 
* In regard to the willows of the Old World it may! tioned that tl good 
account of those of Central Europe by O. v. SremEN in ASCHERSON and GRAEBENER, 
Syn. Mitteleurop. Fl. 4:54-350. 1908-9. Of the species of Eastern Asia and of 
the Himalayas I have given an erlumeration in SarcENT, Pl. Wilson. 3:40-179. 1916. 
The willows of Central and Western Asia and those of Northern Europe and Northern 
Asia are very imperfectly known. I believe, however, that Rev. S. J. ENANDER, 
Lillherrdal, Sweden, the foremost living salicologist, is preparing a monograph of the 
whole genus. 
