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Bulletin Wisconsin Natural History Society. [Vol. 5, No. 4. 
these districts. The increase in faciHties for reaching them, by 
means of electric cars, will probably add to our acquaintance with 
their flora. So, too, there are doubtless many in the city who 
are interested in botany and who could greatly aid in making a 
more complete plant census, if they would but report the results 
of their studies where they could be properly recorded. New 
plants also are added to our flora, by the introduction of seeds, 
brought here in rubbish and waste materials. The list is, how- 
ever, as complete as our present knowledge of the flora of the 
county makes possible. 
In this list the arrangement of families is that given by Engler 
and Prantl ; the nomenclature is that adopted, so far as com- 
pleted, by the editors of the new Gray's Manual, which is soon 
to be published. Where the names so given differ from those 
used in the second edition of Britton's Manual, the latter are in- 
serted as synonyms, printed in italics. There are a number of 
generic and specific names which are liable to still further change 
to bring them in full accord with the rules of nomenclature 
adopted by the Vienna Botanical Congress, but these changes have 
not as yet been fully decided upon, nor are American botanists 
agreed as to the acceptance of this code. 
In the genus Crataegus the names of the original species, from 
which Prof. Sargent has made numerous new species, are here 
given as synonyms, although not strictly such. 
The editors of the new Gray's Manual have very kindly given 
a great deal of time and labor in so correcting the names in the 
list as to bring them up to date. Thanks are also due to Dr. S. 
Graenicher, Mr. Wm. Finger, Dr. H. V. Ogden and Prof. E. J. 
Hill of Chicago for the great assistance they have given in the 
preparation of this list. 
