CRONOLOGIA DELLA FLORA ITALIANA 81 
ning with classical times, which we has had to examine for ca 
ing that enumeration out.. The number of species rey reaches 
4093, but the author does not éonteitt himself with these—he has 
included all the principal. varieties, which practically doubles the 
mber. He groups his plants chronologically under six heads, 
the aoa of which shows the growth of the knowledge of 
the 
A. Classical plants (known in the Roman.epoch) . 408 
edizval plants (known in the ca aay period) 189 
ury 1171 
C. Plants added in the sixteenth ¢ 
D. Plants added in the Snanerect tgs sea 8 
H. Plants added in the eighteenth cent 1311 
F. Plants added in the nineteenth and “beginning of 
the twentieth cent 107 
8000: 
In addition to these there is a list of oto commonly cultivateds 
te: turalized, or adventitious, amounting to. 713; these, divided 
to periods ia te ae with those Fiatiindd above, stand respec- 
tively as 78, 19, 127, 58,175, 256. Of the 718, 382 occur ex- 
clusively in cultivation, and show no tendency to become accli- 
atized. 
The interesting preface, from which we extract these tables: 
gives details of the scope and plan of the work, as well as much 
Critical notes as to the status of the species or references to o-papers 
in which it is dealt with are added whe 7. on se seem useful or. 
necessary, the whole being compressed into the smallest compass 
consistent with clearness. The following ‘apn from the first 
page will indicate the method pursued :— 
8 Ceterach officinarum W. 
1415 Rinio 1532 Cibo—1551 Aldrovandi—-1554 Mettiol 
1561 Anguillara—1563 Cesalpino—1585 Durant e—1595 Pona.” — 
“ Gymnogramme yeosieid tas Zumagl. 
“1860 Zumaglini (sp. dubbia).” : 
: Woodsia glabella R, Br. ieee vice 
“1858 Hausmann in Bertol. xi—1864 Molendo.. Cfr, Dalla. 
Torré e Sarnthein, 1900-1872. Huter, cfr, come sopra—1873 
Venzo i in. N. giorn. bot. ttal.” 
After this enumeration come ‘the cultivated. plants, treated . in’ 
manner following :— 
- Journan or Borany.—Vou. 48.” (Mane, 1910.) 
