acquaintance with the fungi of
different countries in Europe, and those issued by Baron Thuemen from
Austria do not differ materially from those of Northern Germany,
although Dr. Rehm has made us acquainted with some new and interesting
forms from Bavaria.[O]

Russia is to a large extent unknown, except in its northern
borders.[P] Karsten has investigated the fungi of Finland,[Q] and
added considerably to the number of _Discomycetes_, for which the
climate seems to be favourable; but, as a whole, it may be concluded
that Western and Northern Europe are much better explored than the
Eastern and South-Eastern, to which we might add the South, if Italy
be excepted.

We have only to add, for Europe, that different portions of the German
empire have been well worked, from the period of Wallroth to the
present.[R] Recently, the valley of the Rhine has been exhaustively
examined by Fuckel;[S] but both Germany and France suffered checks
during the late war which made their mark on the records of science
not so speedily to be effaced. Denmark, with its splendid Flora Danica
still in progress, more than a century after its commencement,[T] has
a mycologic flora very like to that of Scandinavia, which is as well
known.

If we pass from Europe to North America, we find there a mycologic
flora greatly resembling that of Europe, and although Canada and the
extreme North is little known, some parts of the United States have
been investigated. Schweinitz[U] first made known to any extent the
riches of this country, especially Carolina, and in this state the
late Dr. Curtis and H. W. Ravenel continued their labours. With the
exception of Lea's collections in Cincinnati, Wright's in Texas, and
some contributions from Ohio, Alabama, Massachusetts, and New York, a
great portion of this vast country is mycologically unknown. It is
remarkably rich in fleshy fungi, not only in _Agaricini_, but also in
_Discomycetes_, containing a large number of European forms, mostly
European genera, with many species at present peculiar to itself.
Tropical forms extend upwards into the Southern States.

The islands of the West Indies have been more or less examined, but
none so thoroughly as Cuba, at first by Ramon de la Sagra, and
afterwards by Wright.[V] The three principal genera of _Hymenomycetes_
represented are _Agaricus_, _Marasmius_, and _Polyporus_, represented
severally by 82, 51, and 120 species, amounting to more than half the
entire numbe