4 
24 GEOGRAPHICAL STATISTICS OF THE EUROPEAN FLORA. 
found only upon the mountains, Before Saiving this subj ect I may 
mention that some species, such as Veronica macrostemon ‘ed Castilleja 
pallida, are in Europe strictly Arctic, but occur on the Himalayas or 
the Rocky Mountains; and vice versa other Tr species, such as (entiana 
Frigida and G. prostrata, are “ert Alpine in Sas, but have been 
found in ‘ic meer r America 
occurrence within the vineyard region, or a: oncend even within 
olive region, forbids their bein tane, while their ascent 
above the line of cereal cultivation on tm mountains prevents our 
placing them i in the Southern zone. These I have classed with Tem- 
As an example, I may refer to Astrocarpus sesamoides, which occurs 
ay aca Southern Baropé: but there ranges from the hot plains almost 
ot 
denetacate' plants require, with reference to longitude also, a 
somewhat more elaborate classification than British plants. Those 
British plants which have the most limited area are necessarily con- 
fined to Western Europe, and the occurrence of a British species in 
Eastern Europe implies a more extended range ; but inthe Son aoe Sa 
flora this is not the case, for ies of very limited are y grow 
pra ti in the east. I have therefore found myself obliged to radepe with 
to range east and west within Europe cen the een oe 
subdivisions—1, Confined to Western Europe; 
Eastern ; 4, extending to West and nes 5, oe East desk Ceutuun 
and 6 6, to all three smo of the Contin 
Wi respect t ge eastward iat ae the same subdivisions 
are adopted for Continental as were for British plants, according to 
their extension—1, to Western Asia, or as far as the Altai ee 
in wn ee to India, or as far as the Baikal range in Siberia; 3, to 
betta aoe next plants found in Europe and America, but not re- 
ed from Asia ; and, finally, species which extend to all three Con- 
These last, which in the paper on British plants were Mai 
Sennen ts may be su bdi into two sections, according as they 
(). are confined to the N Northern hemisphere ; or (2) cross the’ Tropics, 
and are found in the Southern hemisphere as well. 
: ee owe at one view. tho: result of ai 
analysis Continental flora, dividing it in one direction 
‘glaciay, n the Fe ee, SATAN, ws prs 
