IV 
(1864); Celakosvhj, Flora von Bohmen (1867—75); Mars- 
son, Flora von Neuvorpommern (1869); lastly the excellent 
Flore de France by Grenier and Godron (1848 — 55). 
For the study of geographical botany, the magnificent 
work of Christ may be mentioned, Das Pflanzenleben der 
Schweiz (1879), of which there is now a French edition, 
revised and enlarged (1883), entitled “La Flore de la Suisse 
et ses origines”. To doctors and chemists, Karsten, Phar- 
mazeutisch-medizinische Botanik (with numerous illustra¬ 
tions) may be recommended. 
The book contains all the phanerogams and vascular 
cryptogams which grow spontaneously in Switzerland. I 
have enumerated separately, in an appendix (on Plants of 
neighbouring countries), the species which are found in 
some adjacent countries, such as northern Savoy, the lake 
of Como, Yeltlin, etc., parts which Gfaudin and other Swiss 
florists have included in their domain. In the appendix 
will also be found a list of such plants as are doubtful 
or as have been erroneously indicated as growing in Switzer¬ 
land, by observers of past and present times. Finally, the 
Adventitious flora enumerates the foreign plants, chiefly 
from southern and eastern Europe, which have been ob¬ 
served from time to time in this country. An asterisk (*) 
has been affixed to the few plants which grow near the 
borders of Switzerland, or the home of which is not entirelv 
certain, but which have been cited as belonging to the 
Swiss flora. The same sign serves to mark some hybrid 
forms which are fairly common, or of which the hybrid 
nature is not completely beyond doubt; most of the hybrids 
however are simply given in observations at the end of 
the genera. I think that, generally speaking, it need not 
be very difficult to recognise them, if the parents are 
well known, and it be borne in mind that their characters 
have an almost equal relation to each of the parents, 
sometimes, of course, being nearer to one, sometimes to the 
other; also that these forms are only found scattered or 
isolated near the parents, their pollen grains being more or 
less misshapen and not usually producing well developed fruit. 
